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Asus Prime X299-A II Manual
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Asus Prime X299-A II Manual

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Summary of Contents for Asus Prime X299-A II

  • Page 1 PRIME X299-A II...
  • Page 2 Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing.

  • Page 3: Table Of Contents

    Contents Safety information ...................... vi About this guide ......................vii PRIME X299-A II specifications summary ..............ix Package contents ..................... xvi Installation tools and components ................ xvii Chapter 1: Product Introduction Before you proceed ................... 1-1 Motherboard layout ..................1-2 Central Processing Unit (CPU) ..............
  • Page 4 3.6.13 PCH-FW Configuration ............. 3-21 Monitor menu ................... 3-21 Boot menu ....................3-21 Tool menu ....................3-23 3.9.1 ASUS EZ Flash 3 Utility ............3-23 3.9.2 Secure Erase ................3-24 3.9.3 ASUS User Profile..............3-25 3.9.4 ASUS SPD Information ............. 3-25 3.9.5...
  • Page 5 3.10 Exit menu ....................3-26 3.11 Updating BIOS ..................3-27 3.11.1 EZ Update ................. 3-27 3.11.2 ASUS EZ Flash 3 ..............3-28 3.11.3 ASUS CrashFree BIOS 3 ............3-30 Chapter 4: RAID Support RAID configurations .................. 4-1 4.1.1 RAID definitions ................4-1 Appendix Q-Code table ......................

  • Page 6: Safety Information

    Safety information Electrical safety • To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. • When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device.

  • Page 7: About This Guide

    Refer to the following sources for additional information and for product and software updates. ASUS website The ASUS website (www.asus.com) provides updated information on ASUS hardware and software products. Optional documentation Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer.
  • Page 8 Conventions used in this guide To ensure that you perform certain tasks properly, take note of the following symbols used throughout this manual. DANGER/WARNING: Information to prevent injury to yourself when trying to complete a task. CAUTION: Information to prevent damage to the components when trying to complete a task.

  • Page 9: Prime X299-A Ii Specifications Summary

    PRIME X299-A II specifications summary Optimized for Intel Core™ X-Series 10000 Processors Family, ® Intel Core™ X-Series Processors Family (6-core above) on LGA ® 2066 Socket* Supports Intel Virtual RAID on CPU (Intel VROC) ® ® Supports 14nm CPU Supports Intel Turbo Boost Max Technology 3.0**...
  • Page 10 PRIME X299-A II specifications summary Intel Core™ i9 10000 X-Series Processors with Intel Virtual RAID on ® ® CPU (VROC) support - 1 x M.2_1 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (PCIe 3.0 x 4 mode) - 1 x M.2_3 Socket 3 with M key, type 2242/2260/2280/22110 storage...
  • Page 11 PRIME X299-A II specifications summary Realtek S1220A 8-channel high definition audio CODEC featuring ® Crystal Sound 3 - Impedance sense for front and rear headphone outputs - High quality 120dB SNR stereo playback output and 113dB SNR recording input - Internal audio Amplifier to enhance the highest quality sound for headphone...
  • Page 12 - ASUS NODE: Hardware control interface - Turbo LAN <EZ DIY> Pre-mounted I/O Shield Q-Design - ASUS Q-Code - ASUS Q-Connector - ASUS Q-DIMM - ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED) - ASUS Q-Slot (continued on the next page)
  • Page 13 - Protect your graphics card investment ASUS 5X Protection III - ASUS SafeSlot Core: Fortified PCIe with solid soldering - ASUS LANGuard: Protects against LAN surges, lightning strikes and static- electricity discharges! Special Features - ASUS Overvoltage Protection: World-class circuit-protecting power design...
  • Page 14 1 x M.2_3 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (PCIe 3.0 x 4 mode from CPU) 8 x SATA 6.0Gb/s connectors 1 x 5-pin Thunderbolt header for ASUS ThunderboltEX series support 1 x 4-pin W_PUMP+ connector 1 x 4-pin AIO_PUMP Fan connector...
  • Page 15 EZ Update Anti-virus software (OEM version) Operating Windows 10 64-bit ® System ATX Form Factor, 12”x 9.6” (30.5 cm x 24.4 cm) Form Factor • Specifications are subject to change without notice. • Visit the ASUS website for the software manual.

  • Page 16: Package Contents

    Package contents Check your motherboard package for the following items. Motherboard ASUS PRIME X299-A II motherboard 4 x Serial ATA 6.0 Gb/s cables Cables 1 x Addressable LED extension cable 1 x RGB LED extension cable 1 x FAN holder...

  • Page 17: Installation Tools And Components

    Installation tools and components Intel ® LGA 2066 CPU Intel LGA 2066 compatible CPU Fan ® Phillips (cross) screwdriver SATA hard disk drive PC chassis 1 bag of screws DIMM Power supply unit SATA optical disc drive (optional) Graphics card M.2 SSD module (optional) The tools and components in the table above are not included in the motherboard package.
  • Page 18 xviii...

  • Page 19: Chapter 1: Product Introduction

    Chapter 1: Product Introduction Product Introduction Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings. • Unplug the power cord from the wall socket before touching any component. • Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to avoid damaging them due to static electricity. • Hold components by the edges to avoid touching the ICs on them. • Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component. • Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components. ASUS PRIME X299-A II...

  • Page 20: Motherboard Layout

    Motherboard layout Refer to Internal connectors and Rear panel features for more information. Chapter 1: Product Introduction...
  • Page 21 1-11 13. System Panel connector 1-15 14. Node connector 1-14 15. VROC Key connector 1-16 16. USB 2.0 connector 1-16 17. Addressable RGB LED connector 1-19 18. Thermal sensor connector 1-20 19. Power button 20. Serial port connector 1-21 21. Q-Code LED 1-12 22. Front Panel Audio connector 1-21 23. M.2 Wi-Fi slot 1-25 24. Rear I/O Cover LED connector 1-20 ASUS PRIME X299-A II...

  • Page 22: Central Processing Unit (Cpu)

    Central Processing Unit (CPU) The motherboard comes with a surface mount LGA2066 socket designed for the Intel ® Core™ X-series Processors. • Ensure that you install the correct CPU designed for LGA2066 socket only. DO NOT install a CPU designed for other sockets on the LGA2066 socket. • The CPU fits in only one correct orientation. DO NOT force the CPU into the socket to prevent bending the connectors on the socket and damaging the CPU. • Ensure that all power cables are unplugged before installing the CPU. • Upon purchase of the motherboard, ensure that the PnP cap is on the socket and the socket contacts are not bent. Contact your retailer immediately if the PnP cap is missing, or if you see any damage to the PnP cap/socket contacts/motherboard components. ASUS will shoulder the cost of repair only if the damage is shipment/ transit-related. • Keep the cap after installing the motherboard. ASUS will process Return Merchandise Authorization (RMA) requests only if the motherboard comes with the cap on the LGA2066 socket. • The product warranty does not cover damage to the socket contacts resulting from incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP cap. Chapter 1: Product Introduction...

  • Page 23: System Memory

    System memory The motherboard comes with Dual Inline Memory Modules (DIMM) slots designed for DDR4 (Double Data Rate 4) memory modules. A DDR4 memory module is notched differently from a DDR, DDR2, or DDR3 module. DO NOT install a DDR, DDR2, or DDR3 memory module to the DDR4 slot. Recommended memory configurations Intel Core™ X-series Processors (6-core or above) ® ASUS PRIME X299-A II...
  • Page 24 Memory configurations You may install 4 GB, 8 GB, 16 GB, and 32 GB unbuffered and non-ECC DDR4 DIMMs into the DIMM sockets. • The default memory operation frequency is dependent on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. • For system stability, use a more efficient memory cooling system to support a full memory load or overclocking condition. • Always install the DIMMS with the same CAS Latency. For an optimum compatibility, we recommend that you install memory modules of the same version or data code (D/C) from the same vendor. Check with the vendor to get the correct memory modules. • Visit the ASUS website for the latest QVL. Chapter 1: Product Introduction...

  • Page 25: Expansion Slots

    Expansion slots Unplug the power cord before adding or removing expansion cards. Failure to do so may cause you physical injury and damage motherboard components. ASUS PRIME X299-A II...
  • Page 26 48 and 44-Lane CPUs Slot Description Single VGA Dual VGA Triple VGA PCIEX16_1 PCIEX1_1 PCIEX16_2 PCIEX1_2 PCIEX16_3 28-Lane CPUs Slot Description Single VGA Dual VGA PCIEX16_1 PCIEX1_1 PCIEX16_2 PCIEX1_2 PCIEX16_3 • We recommend that you provide sufficient power when running CrossFireX™ or SLI ® mode. • Ensure to connect both 8-pin power plugs when running CrossFireX™ or SLI ® mode. • Connect a chassis fan to the chassis fan connectors when using multiple graphics cards for better thermal environment.

  • Page 27: Onboard Buttons

    Onboard buttons Power button Press the Power button to power up the system, or put the system into sleep or soft-off mode (depending on the operating system settings). The button also lights up when the system is plugged to a power source, indicating that you should shut down the system and unplug the power cable before removing or installing any motherboard component. ASUS PRIME X299-A II...

  • Page 28: Onboard Jumpers

    Onboard jumpers Clear RTC RAM jumper The Clear RTC RAM jumper allows you to clear the Real Time Clock (RTC) RAM in the CMOS, which contains the date, time, system passwords, and system setup parameters. To erase the RTC RAM: Turn OFF the computer and unplug the power cord. Short-circuit pin 1-2 with a metal object or jumper cap for about 5-10 seconds. Plug the power cord and turn ON the computer. Hold down the <Del> key during the boot process and enter BIOS setup to re- enter data. DO NOT short-circuit the pins except when clearing the RTC RAM. Short-circuiting or placing a jumper cap will cause system boot failure! If the steps above do not help, remove the onboard button cell battery and move the jumper again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the button cell battery. Chapter 1: Product Introduction 1-10...
  • Page 29 CPU Over Voltage jumper The CPU Over Voltage jumper allows you to set a higher CPU voltage for a flexible overclocking system (depending on the type of the installed CPU). Set to pins 2-3 to increase the CPU voltage setting, or set to pins 1-2 to use the default CPU voltage setting. ASUS PRIME X299-A II 1-11...

  • Page 30: Onboard Leds

    Onboard LEDs Q LEDs The Q LEDs check key components (CPU, DRAM, VGA, and booting devices) during the motherboard booting process. If an error is found, the critical component’s LED stays lit up until the problem is solved. The Q LEDs provide the most probable cause of an error code as a starting point for troubleshooting. The actual cause may vary from case to case. Q-Code LED The Q-Code LED design provides you with a 2-digit error code that displays the system status. • The Q-Code LEDs provide the most probable cause of an error code as a starting point for troubleshooting. The actual cause may vary from case to case. • Please refer to the Q-Code table in the Appendix section for more details. Chapter 1: Product Introduction 1-12...

  • Page 31: Internal Connectors

    Internal connectors SATA 6 Gb/s connectors The SATA 6 Gb/s connector allows you to connect SATA devices such as optical disc drives and hard disk drives via a SATA cable. If you installed SATA storage devices, you can create a RAID 0, 1, 5, and 10 configuration with the Intel Rapid Storage Technology through the onboard Intel X299 chipset. ® ® • The connectors are set to [IRST Mode] by default. • The M.2_2 socket shares bandwidth with SATA6G_1 port when using M.2 SATA devices. • The SATA6G_7 port shares bandwidth with PCIEX1_2. • Before creating a RAID set, refer to the RAID Configuration Guide. You can download the RAID Configuration Guide from the ASUS website. ASUS PRIME X299-A II 1-13...
  • Page 32 Thunderbolt connector The Thunderbolt connector allows you to connect an add-on Thunderbolt I/O card that supports Intel’s Thunderbolt Technology, allowing you to connect up to six Thunderbolt-enabled devices and a DisplayPort-enabled display in a daisy-chain configuration. The add-on Thunderbolt I/O card and Thunderbolt cables are purchased separately. Node connector The Node connector allows you to connect Node compatible devices. Visit www.asus.com for more information about the devices and the latest compatibility list. Chapter 1: Product Introduction 1-14...
  • Page 33 System Panel connector The System Panel connector supports several chassis-mounted functions. • System Power LED connector (PLED) The 2-pin and/or 3-1 pin connectors allow you to connect the System Power LED. The System Power LED lights up when the system is connected to a power source, or when you turn on the system power, and blinks when the system is in sleep mode. • Storage Device Activity LED connector (HDD_LED) The 2-pin connector allows you to connect the Storage Device Activity LED. The Storage Device Activity LED lights up or blinks when data is read from or written to the storage device or storage device add-on card. • System Warning Speaker connector (SPEAKER) The 4-pin connector allows you to connect the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings. • Power Button/Soft-off Button connector (PWRSW) The 3-1 pin connector allows you to connect the system power button. Press the power button to power up the system, or put the system into sleep or soft-off mode (depending on the operating system settings). • Reset button connector (RESET) The 2-pin connector allows you to connect the chassis-mounted reset button. Press the reset button to reboot the system. • Chassis intrusion connector (CHASSIS) The 2-pin connector allows you to connect the chassis-mounted intrusion detection sensor or switch. The chassis intrusion sensor or switch sends a high-level signal to the connector when a chassis component is removed or replaced, the signal is then generated as a chassis intrusion event. ASUS PRIME X299-A II 1-15...
  • Page 34 VROC Key connector The VROC (Virtual Raid on CPU) Key connector allows you to connect a VROC hardware key to enable additional CPU RAID functions with Intel CPU RSTe. ® The VROC hardware key is purchased separately. USB 2.0 connector The USB 2.0 connector allows you to connect a USB module for additional USB 2.0 ports. The USB 2.0 connector provides data transfer speeds of up to 480 MB/s connection speed. Chapter 1: Product Introduction 1-16...
  • Page 35 USB 3.2 Gen 1 connector The USB 3.2 Gen 1 connector allows you to connect a USB 3.2 Gen 1 module for additional USB 3.2 Gen 1 ports. The USB 3.2 Gen 1 connector provides data transfer speeds of up to 5 Gb/s The USB 3.2 Gen 1 module is purchased separately. The plugged USB 3.2 Gen 1 device may run on xHCI or EHCI mode depending on the operating system’s setting. USB 3.2 Gen 2 connector The USB 3.2 Gen 2 connector allows you to connect a USB 3.2 Gen 2 module for additional USB 3.2 Gen 2 ports. The USB 3.2 Gen 2 connector provides data transfer speeds of up to 10 Gb/s. The USB 3.2 Gen 2 module is purchased separately. ASUS PRIME X299-A II 1-17...
  • Page 36 AURA RGB LED connector The AURA RGB LED connector allows you to connect RGB LED strips. The AURA RGB LED connector supports 5050 RGB multi-color LED strips (12V/G/R/B), with a maximum power rating of 3A (12V), and no longer than 3 m. Before you install or remove any component, ensure that the power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components. • Actual lighting and color will vary with LED strip. • If your LED strip does not light up, check if the RGB LED extension cable and the RGB LED strip is connected in the correct orientation, and the 12V connector is aligned with the 12V header on the motherboard. • The LED strip will only light up when the system is powered on. • The LED strip is purchased separately. Chapter 1: Product Introduction 1-18...
  • Page 37 Addressable RGB LED connector The Addressable RGB LED connector allows you to connect individually addressable RGB WS2812B LED strips or WS2812B based LED strips. The Addressable RGB LED connector supports WS2812B addressable RGB LED strips (5V/Data/Ground), with a maximum power rating of 3A (5V) and a maximum of 120 LEDs. Before you install or remove any component, ensure that the power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components. • Actual lighting and color will vary with LED strip. • If your LED strip does not light up, check if the addressable RGB LED strip is connected in the correct orientation, and the 5V connector is aligned with the 5V header on the motherboard. • The addressable RGB LED strip will only light up when the system is powered on. • The addressable RGB LED strip is purchased separately. ASUS PRIME X299-A II 1-19...
  • Page 38 Rear I/O Cover LED connector The Rear I/O Cover LED connector is for connecting the LED board on your rear I/O cover. Thermal Sensor connector The Thermal Sensor connector allows you to connect a sensor to monitor the temperature of the devices and the critical components inside the motherboard. Connect the thermal sensor and place it on the device or the motherboard’s component to detect its temperature. Chapter 1: Product Introduction 1-20...
  • Page 39 Serial Port connector The Serial (COM) Port connector allows you to connect a serial port module. Connect the serial port module cable to this connector, then install the module to a slot opening on the system chassis. The serial port module is purchased separately. Front Panel Audio connector The front panel audio connector is for a chassis-mounted front panel audio I/O module that supports HD Audio. Connect one end of the front panel audio I/O module cable to this connector. We recommend that you connect a high-definition front panel audio module to this connector to avail of the motherboard’s high-definition audio capability. ASUS PRIME X299-A II 1-21...
  • Page 40 Fan and Pump connectors The Fan and Pump connectors allow you to connect fans or pumps to cool the system. • DO NOT forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! Do not place jumper caps on the fan connectors! • Ensure the cable is fully inserted into the connector. • Connect the fan of your water cooling kit to the AIO_PUMP connector. • W_PUMP+ function support depends on water cooling device. Header Max. Current Max. Power Default Speed Shared Control CPU_FAN Q-Fan Controlled CPU_OPT Q-Fan Controlled CHA_FAN1 Q-Fan Controlled CHA_FAN2 Q-Fan Controlled AIO_PUMP Full-Speed W_PUMP+ Full-Speed HS_FAN Q-Fan Controlled Chapter 1: Product Introduction 1-22...
  • Page 41 Power connectors These Power connectors allow you to connect your motherboard to a power supply. The power supply plugs are designed to fit in only one orientation, find the proper orientation and push down firmly until the power supply plugs are fully inserted. Ensure to connect both 8-pin power plugs under heavy usage. • We recommend that you use a PSU with a higher power output when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate. • If you want to use two or more high-end PCIe x16 cards, use a PSU with 1000W power or above to ensure the system stability. ASUS PRIME X299-A II 1-23...
  • Page 42 M.2 slot The M.2 slot allows you to install M.2 devices such as M.2 SSD modules. • For Intel Core™ i9 10000 X-Series Processors support with Intel Virtual RAID ® ® on CPU (VROC): - M .2_1 socket supports PCIe 3.0 x4 mode M Key design and type 2242 / 2260 / 2280 / 22110 PCIe storage devices. - M .2_3 socket supports PCIe 3.0 x4 mode M Key design and type 2242 / 2260 / 2280 / 22110 PCIe storage devices. • For Intel Core™ i9 9000/7000 and i7 9000/7000 X-Series Processors support ®...
  • Page 43 18. M.2 Wi-Fi slot The M.2 Wi-Fi slot allows you to install an M.2 Wi-Fi module (E-key, type 2230). The M.2 Wi-Fi module is purchased separately. ASUS PRIME X299-A II 1-25...
  • Page 44 Chapter 1: Product Introduction 1-26...

  • Page 45: Chapter 2: Basic Installation

    The diagrams in this section are for reference only. The motherboard layout may vary with models, but the installation steps are the same for all models. 2.1.1 Motherboard installation Place the motherboard into the chassis, ensuring that its rear I/O ports are aligned to the chassis’ rear I/O panel. ASUS PRIME X299-A II...
  • Page 46 Place nine screws into the holes indicated by circles to secure the motherboard to the chassis. DO NOT overtighten the screws! Doing so can damage the motherboard. Chapter 2: Basic Installation...

  • Page 47: Cpu Installation

    2.1.2 CPU installation • Ensure that you install the correct CPU designed for LGA2066 socket only. • ASUS will not cover damages resulting from incorrect CPU installation/removal, incorrect CPU orientation/placement, or other damages resulting from negligence by the user. • Please note the order in opening/closing the double latch. Follow the instructions printed on the metal sealing hatch or the illustrations shown below in this manual. The plastic cap will pop up automatically once the CPU is in place and the hatch properly sealed down. ASUS PRIME X299-A II...
  • Page 48 Triangle mark Triangle mark Chapter 2: Basic Installation...

  • Page 49: Cooling System Installation

    2.1.3 Cooling system installation Apply the Thermal Interface Material to the CPU heatsink and CPU before you install the heatsink and fan, if necessary. To install the CPU heatsink and fan assembly ASUS PRIME X299-A II...
  • Page 50 To install an AIO cooler AIO_PUMP CPU_FAN CPU_OPT Chapter 2: Basic Installation...

  • Page 51: Dimm Installation

    2.1.4 DIMM installation To remove a DIMM ASUS PRIME X299-A II...

  • Page 52: Atx Power Connection

    2.1.5 ATX power connection Ensure to connect both 8-pin power plugs under heavy usage. Chapter 2: Basic Installation...

  • Page 53: Sata Device Connection

    2.1.6 SATA device connection ASUS PRIME X299-A II...

  • Page 54: Front I/O Connector

    2.1.7 Front I/O connector To install ASUS Q-Connector To install USB 3.2 Gen 2 connector USB 3.2 Gen 2 This connector will only fit in one orientation. Push the connector until it clicks into place. To install USB 3.2 Gen 1 connector To install USB 2.0 connector USB 3.2 Gen 1 USB 2.0...

  • Page 55: Expansion Card Installation

    2.1.8 Expansion card installation To install PCIe x16 cards To install PCIe x1 cards ASUS PRIME X299-A II 2-11...

  • Page 56: Installation

    2.1.9 M.2 installation Supported M.2 type varies per motherboard. Chapter 2: Basic Installation 2-12...

  • Page 57: Fan Bracket Installation

    2.1.10 Fan bracket installation To install the MOS FAN bracket and fan When using high performance settings whilst overclocking, ensure to install the MOS FAN bracket for additional fan(s). • You may install 12V (1A, 12W), 40mm x 40mm fans. • The fan is purchased separately. ASUS PRIME X299-A II 2-13...

  • Page 58: Bios Update Utility

    To use BIOS FlashBack™: Insert a USB storage device to the BIOS FlashBack™ port. • We recommend you to use a USB 2.0 storage device to save the latest BIOS version for better compatibility and stability. • Refer to section 2.3.1 Rear I/O connection for the location of the USB port that supports BIOS FlashBack™. Visit https://www.asus.com/support/ and download the latest BIOS version for this motherboard. Manually rename the file as X299A2.CAP, or launch the BIOSRenamer.exe application to automatically rename the file, then copy it to your USB storage device. The BIOSRenamer.exe application is zipped together with your BIOS file when you download a BIOS file for a BIOS FlashBack™ compatible motherboard. Shut down your computer. Press the BIOS FlashBack™ button for three seconds until the FlashBack™ LED blinks three times, indicating that the BIOS FlashBack™ function is enabled. BIOS FlashBack™ port BIOS FlashBack™ button...
  • Page 59 Wait until the light goes out, indicating that the BIOS updating process is completed. For more BIOS update utilities in BIOS setup, refer to the section 3.11 Updating BIOS in Chapter 3. • Do not unplug portable disk, power system, or press the CLR_CMOS button while BIOS update is ongoing, otherwise update will be interrupted. In case of interruption, please follow the steps again. • If the light flashes for five seconds and turns into a solid light, this means that the BIOS FlashBack™ is not operating properly. This may be caused by improper installation of the USB storage device and filename/file format error. If this scenario happens, please restart the system to turn off the light. • Updating BIOS may have risks. If the BIOS program is damaged during the process and results to the system’s failure to boot up, please contact your local ASUS Service Center. ASUS PRIME X299-A II 2-15...

  • Page 60: Motherboard Rear And Audio Connections

    Motherboard rear and audio connections 2.3.1 Rear I/O connection Rear panel connectors PS/2 keyboard/mouse combo port USB 3.2 Gen 1 ports 7 and 8 Intel LAN port (LAN1)* USB 3.2 Gen 2 Type-C™ port EC1 ® USB 3.2 Gen 2 port E2 BIOS FlashBack™ button USB 2.0 ports 9 and 10 Optical S/PDIF Out port USB 3.2 Gen 1 ports 5 and 6 Audio I/O ports** * and **: Refer to the tables on the next page for LAN port LEDs and audio port definitions. •...
  • Page 61 ** Audio 2, 4, 5.1 or 7.1-channel configuration Headset Port 4-channel 5.1-channel 7.1-channel 2-channel Light Blue Line In Line In Line In Side Speaker Out Lime Line Out Front Speaker Out Front Speaker Out Front Speaker Out Pink Mic In Mic In Mic In Mic In Orange – – Center/Sub Center/Sub woofer woofer Black – Rear Speaker Out Rear Speaker Out Rear Speaker Out ASUS PRIME X299-A II 2-17...

  • Page 62: Audio I/O Connections

    2.3.2 Audio I/O connections Audio I/O ports Connect to Headphone and Mic Connect to Stereo Speakers Connect to 2-channel Speakers Chapter 2: Basic Installation 2-18...
  • Page 63 Connect to 4-channel Speakers Connect to 5.1-channel Speakers Connect to 7.1-channel Speakers ASUS PRIME X299-A II 2-19...

  • Page 64: Starting Up For The First Time

    Starting up for the first time After making all the connections, replace the system case cover. Ensure that all switches are off. Connect the power cord to the power connector at the back of the system chassis. Connect the power cord to a power outlet that is equipped with a surge protector. Turn on the devices in the following order: Monitor External SCSI devices (starting with the last device on the chain) System power After applying power, the system power LED on the system front panel case lights up. For systems with ATX power supplies, the system LED lights up when you press the ATX power button. If your monitor complies with the “green” standards or if it has a “power standby” feature, the monitor LED may light up or change from orange to green after the system LED turns on. The system then runs the power-on self tests (POST). While the tests are running, the BIOS beeps (refer to the BIOS beep codes table) or additional messages appear on the screen. If you do not see anything within 30 seconds from the time you turned on the power, the system may have failed a power-on test. Check the jumper settings and connections or call your retailer for assistance. BIOS Beep Description One short beep VGA detected Quick boot set to disabled...

  • Page 65: Chapter 3: Bios Setup

    BIOS Setup Knowing BIOS The new ASUS UEFI BIOS is a Unified Extensible Interface that complies with UEFI architecture, offering a user-friendly interface that goes beyond the traditional keyboard- only BIOS controls to enable a more flexible and convenient mouse input. You can easily navigate the new UEFI BIOS with the same smoothness as your operating system.

  • Page 66: Bios Setup Program

    RTC RAM via the Clear CMOS button. • The BIOS setup program does not support the Bluetooth devices. Please visit ASUS website for the detailed BIOS content manual. BIOS menu screen The BIOS Setup program can be used under two modes: EZ Mode and Advanced Mode.

  • Page 67: Ez Mode

    Click to go to Advanced Mode Loads optimized Search on the FAQ default settings Click to display boot devices Selects the boot device priority The boot device options vary depending on the devices you installed to the system. ASUS PRIME X299-A II...

  • Page 68: Advanced Mode

    3.2.2 Advanced Mode The Advanced Mode provides advanced options for experienced end-users to configure the BIOS settings. The figure below shows an example of the Advanced Mode. Refer to the following sections for the detailed configurations. To switch from EZ Mode to Advanced Mode, click Advanced Mode(F7) or press the <F7> hotkey.
  • Page 69 This button above the menu bar allows you to view the descriptions of AI overclocking and enable it. • Refer to section AI OC Guide for more information. • This function is only enabled when using an unlocked CPU. ASUS PRIME X299-A II...
  • Page 70 Move your mouse over this button to show a QR code, scan this QR code on your mobile device to connect to the BIOS FAQ web page of the ASUS support website. You can also scan the following QR code:...
  • Page 71 This button allows you to view and configure the RAID settings of your system. Refer to section EZ Tuning Wizard for more information. Last Modified button This button shows the items that you last modified and saved in BIOS Setup. ASUS PRIME X299-A II...

  • Page 72: Q-Fan Control

    3.2.3 Q-Fan Control The Q-Fan Control allows you to set a fan profile or manually configure the operating speed of your CPU and chassis fans. Click to select a fan to Select between be configured different Q-Fan modes Select a profile to apply to Click to apply the fan setting your fans Click to undo the...
  • Page 73 Select the fan that you want to configure and to view its current status. Click and drag the speed points to adjust the fans’ operating speed. Click Apply to save the changes then click Exit (ESC). ASUS PRIME X299-A II...

  • Page 74: Ai Oc Guide

    3.2.4 AI OC Guide • The screenshot shown in this section is for reference purposes only, and may not exactly match what you see on your screen. • This function is only enabled when using an unlocked CPU. The AI OC Guide allows you to enable the Ai Overclocking feature, or view a quick guide of the Ai Overclocking feature which highlights the recommended setup procedure and descriptions of the AI Overclocking.

  • Page 75: Ez Tuning Wizard

    Click RAID then select the port that you want to set to [RAID] mode, CPU, PCH or SATA, then click Next. • Ensure that your HDDs have no existing RAID volumes. • Ensure to connect your HDDs to Intel SATA connectors. ® Select Yes to enable RAID. ASUS PRIME X299-A II 3-11...
  • Page 76 Select the type of storage for your RAID, Easy Backup or Super Speed, then click Next. For Easy Backup, click Next then select from Easy Backup (RAID 1) or Easy Backup (RAID 10). You can only select Easy Backup (RAID 10) if you connect four (4) HDDs. For Super Speed, click Next then select from Super Speed (RAID 0) or Super Speed (RAID 5).

  • Page 77: My Favorites

    My Favorites is your personal space where you can easily save and access your favorite BIOS items. My Favorites comes with several performance, power saving, and fast boot related items by default. You can personalize this screen by adding or removing items. ASUS PRIME X299-A II 3-13...
  • Page 78 Adding items to My Favorites To add BIOS items: Press <F3> on your keyboard or click MyFavorite(F3) from the BIOS screen to open Setup Tree Map screen. On the Setup Tree Map screen, select the BIOS items that you want to save in My Favorites screen.

  • Page 79: Main Menu

    This item allows you to set the BCLK (base clock) frequency to enhance the system performance. Use the <+> or <-> to adjust the value. We recommend you to set the value based on the CPU specification, as high BCLK frequencies may damage the CPU permanently. ASUS PRIME X299-A II 3-15...
  • Page 80 ASUS MultiCore Enhancement [Auto] This item allows you to maximize the oveclocking performance optimized by ASUS core ratio settings. [Disabled] This item allows you to set to default core ratio settings. CPU Core Ratio This item allows you to set the CPU core ratios.

  • Page 81: Advanced Menu

    The items in this menu allow you to change the ASPM for PCH and SA PCIe. 3.6.3 System Agent (SA) Configuration The items in this menu allow you to adjust the Link Speed for PEG Port and Multi-Monitor. ASUS PRIME X299-A II 3-17...

  • Page 82: Pch Configuration

    3.6.4 PCH Configuration The items in this menu allow you to adjust the PCH PCIe speed. PCI Express Configuration This item allows you to configure the PCIe slots. PCIe Speed This item allows your system to automatically select the PCIe port speed. Configuration options: [Auto] [Gen 1 (2.5 GT/s)] [Gen 2 (5 GT/s)] [Gen 3 (8 GT/s)] 3.6.5 PCH Storage Configuration...

  • Page 83: Cpu Storage Configuration

    This item allows you to turn the RGB LED lighting on or off when the system is in the sleep, hibernate or soft off states. Configuration options: [On] [Off] Intel LAN Controller This item allows you to enable or disable the Intel LAN controller. Configuration options: [Disabled] [Enabled] ASUS PRIME X299-A II 3-19...

  • Page 84: Apm Configuration

    3.6.8 APM Configuration The items in this menu allow you to set system wake and sleep settings. ErP Ready [Disabled] This item allows you to switch off some power at S4+S5 or S5 to get the system ready for ErP requirement. When set to [Enabled], all other PME options are switched off. Configuration options: [Disabled] [Enable(S4+S5)] [Enable(S5)] 3.6.9 Network Stack Configuration...

  • Page 85: Thunderbolt(Tm) Configuration

    Next Boot after AC Power Loss [Normal Boot] Returns to normal boot on the next boot after an AC power loss. [Fast Boot] Accelerates the boot speed on the next boot after an AC power loss. ASUS PRIME X299-A II 3-21...
  • Page 86 Boot Configuration Setup Mode [Advanced Mode] This item allows you to go to Advanced Mode of the BIOS after POST. [EZ Mode] This item allows you to go to EZ Mode of the BIOS after POST. CSM (Compatibility Support Module) This item allows you to configure the CSM (Compatibility Support Module) items to fully support the various VGA, bootable devices and add-on devices for better compatibility.

  • Page 87: Tool Menu

    3.9.1 ASUS EZ Flash 3 Utility This item allows you to run ASUS EZ Flash 3. When you press <Enter>, a confirmation message appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to confirm your choice.

  • Page 88: Secure Erase

    To launch Secure Erase, click Tool > Secure Erase on the Advanced mode menu. Check the ASUS support site for a full list of SSDs tested with Secure Erase. The drive may become unstable if you run Secure Erase on an incompatible SSD.

  • Page 89: Asus User Profile

    This item displays the information and recommended configuration for the PCIe slots that the graphics card is installed in your system. This feature is only supported on selected ASUS graphics cards. Bus Interface This item allows you to select the bus interface.

  • Page 90: Exit Menu

    3.10 Exit menu The Exit menu items allow you to load the optimal default values for the BIOS items, and save or discard your changes to the BIOS items. You can access the EZ Mode from the Exit menu. Load Optimized Defaults This option allows you to load the default values for each of the parameters on the Setup menus.

  • Page 91: Updating Bios

    ® ASUS EZ Flash 3: Updates the BIOS using a USB flash drive. ASUS CrashFree BIOS 3: Restores the BIOS using the motherboard support DVD or a USB flash drive when the BIOS file fails or gets corrupted. 3.11.1...

  • Page 92: Asus Ez Flash 3

    3.11.2 ASUS EZ Flash 3 ASUS EZ Flash 3 allows you to download and update to the latest BIOS through the Internet without having to use a bootable floppy disk or an OS-based utility. Updating through the Internet varies per region and Internet conditions. Check your local Internet connection before updating through the Internet.
  • Page 93 To update the BIOS by Internet: Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select ASUS EZ Flash 3 Utility and press <Enter>. Select via Internet. Press the Left/Right arrow keys to select an Internet connection method, and then press <Enter>.

  • Page 94: Asus Crashfree Bios 3

    The BIOS file in the motherboard support DVD may be older than the BIOS file published on the ASUS official website. If you want to use the newer BIOS file, download the file at https://www.asus.com/support/ and save it to a USB flash drive.

  • Page 95: Chapter 4: Raid Support

    ® and RAID 10 solution. For more information on configuring your RAID sets, please refer to the RAID Configuration Guide which you can find at https://www.asus.com/support. 4.1.1 RAID definitions RAID 0 (Data striping) optimizes two identical hard disk drives to read and write data in parallel, interleaved stacks.
  • Page 96 Chapter 4: RAID Support...

  • Page 97: Appendix

    CPU self test failed or possible CPU cache error CPU micro-code is not found or micro-code update is failed Internal CPU error Reset PPI is not available Reserved for future AMI error codes 5C – 5F (continued on the next page) ASUS PRIME X299-A II...

  • Page 98: Q-Code Table

    Q-Code table Code Description S3 Resume is stared (S3 Resume PPI is called by the DXE IPL) S3 Boot Script execution Video repost OS S3 wake vector call Reserved for future AMI progress codes E4 – E7 S3 Resume Failed S3 Resume PPI not Found S3 Resume Boot Script Error S3 OS Wake Error...
  • Page 99 Reserved for ASL (see ASL Status Codes section below) Ready To Boot event Legacy Boot event Exit Boot Services event Runtime Set Virtual Address MAP Begin Runtime Set Virtual Address MAP End Legacy Option ROM Initialization System Reset (continued on the next page) ASUS PRIME X299-A II...
  • Page 100 Q-Code table Code Description USB hot plug PCI bus hot plug Clean-up of NVRAM Configuration Reset (reset of NVRAM settings) B8– BF Reserved for future AMI codes CPU initialization error System Agent initialization error PCH initialization error Some of the Architectural Protocols are not available PCI resource allocation error.

  • Page 101: Notices

    Notices FCC Compliance Information Responsible Party: Asus Computer International Address: 48720 Kato Rd., Fremont, CA 94538, USA Phone / Fax No: (510)739-3777 / (510)608-4555 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 102 Compliance Statement of Innovation, Science and Economic Development Canada (ISED) This device complies with Innovation, Science and Economic Development Canada licence exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
  • Page 103 ASUS products sold in Vietnam, on or after September 23, 2011,meet the requirements of the Vietnam Circular 30/2011/TT-BCT. Các sản phẩm ASUS bán tại Việt Nam, vào ngày 23 tháng 9 năm2011 trở về sau, đều phải đáp ứng các yêu cầu của Thông tư 30/2011/TT-BCT của Việt Nam.
  • Page 104 DO NOT throw the motherboard in municipal waste. This product has been designed to enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin indicates that the product (electrical and electronic equipment) should not be placed in municipal waste.
  • Page 105 відповідає основним вимогам та іншим відповідним положенням Cijeli tekst EU izjave o sukladnosti dostupan je na: www.asus.com/support відповідних Директив. Повний текст декларації відповідності стандартам Čeština Společnost ASUSTeK Computer Inc. tímto prohlašuje, že toto ЄС...

  • Page 106: Asus Contact Information

    +1-510-739-3777 +1-510-608-4555 Web site http://www.asus.com/us/ Technical Support Support fax +1-812-284-0883 Telephone +1-812-282-2787 Online support http://qr.asus.com/techserv ASUS COMPUTER GmbH (Germany and Austria) Address Harkort Str. 21-23, 40880 Ratingen, Germany +49-2102-959931 Web site http://www.asus.com/de Online contact http://eu-rma.asus.com/sales Technical Support Telephone +49-2102-5789555 Support Fax...

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