ASUS - Prime X299-A II DDR4 Dual M.2 ATX Socket 2066

Intel® Socket 2066 Core™ X-Series Processors
* The Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types
* Refer to www.asus.com for CPU support list

Intel® X299

(Intel® Core™ i9 10000 X-Series CPU)
8 x DIMM, Max. 256GB, DDR4 4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3800(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/2933/2800/2666/2400/2133 MHz Non-ECC, Un-buffered Memory
(Intel® Core™ i9 9000/7000 and i7 9000 X-Series CPU)
8 x DIMM, Max. 256GB, DDR4 4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3800(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/2933(O.C.)/2800(O.C.)/2666/2400/2133 MHz Non-ECC, Un-buffered Memory
Supports Intel® Extreme Memory Profile (XMP)
* Hyper DIMM support is subject to the physical characteristics of individual CPUs. 
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

Supports NVIDIA® Quad-GPU SLI® Technology
Supports NVIDIA® 3-Way SLI® Technology
Supports NVIDIA® 2-Way SLI® Technology
Supports AMD Quad-GPU CrossFireX™ Technology
Supports AMD 3-Way CrossFireX™ Technology

48-Lane CPU-
3 x PCIe 3.0/2.0 x16 (x16, x16/x16, x16/x16/x8)
2 x PCIe 3.0/2.0 x1 *1
44-Lane CPU-
3 x PCIe 3.0/2.0 x16 (x16, x16/x16, x16/x16/x8)
2 x PCIe 3.0/2.0 x1 *1
28-Lane CPU-
2 x PCIe 3.0/2.0 x16 (x16, x16/x8) *2
2 x PCIe 3.0/2.0 x1 *1
1 x M.2 Socket 1 with E key, type 2230 for WIFI/BT devices support PCIE/USB mode*
* The Wi-Fi E key shares bandwidth with PCIEX1_1.
* The Wi-Fi/BT module is purchased separately

Intel® X299 Chipset :
1 x M.2 x4 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)*3
1 x M.2 x4 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x 4 mode)*4
8 x SATA 6Gb/s port(s)*5
Support Raid 0, 1, 5, 10
Intel® Rapid Storage Technology supports
(Intel® Core™ i9 10000 X-Series CPU) :
2 x M.2 x4 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x 4 mode)
Support Raid 0, 1, 5, 10
Intel® Rapid Storage Technology Enterprise supports
(Intel® Core™ i9 9000/7000 and i7 9000 X-Series CPU) :
1 x M.2 x4 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x 4 mode)
Support Raid 0, 1, 5, 10
Intel® Rapid Storage Technology 15 support
Intel® Optane™ Memory Ready *6

Intel® I219V, 1 x Gigabit LAN
ASUS Turbo LAN Utility
ASUS LAN Guard

Realtek® S1220A 8-Channel High Definition Audio CODEC
- Power pre-regulator reduces power input noise to ensure consistent performance
- Impedance sense for front and rear headphone outputs
- Internal audio Amplifier to enhance the highest quality sound for headphone and speakers
- Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking
Audio Feature :
- DTS X®:Ultra
- Optical S/PDIF out port(s) at back panel
- Audio Shielding: Ensures precision analog/digital separation and greatly reduced multi-lateral interference
- Dedicated audio PCB layers: Separate layers for left and right channels to guard the quality of the sensitive audio signals
- Premium Japanese-made audio capacitors: Provide warm, natural and immersive sound with exceptional clarity and fidelity
- Unique de-pop circuit: Reduces start-up popping noise to audio outputs

ASMedia® USB 3.2 Gen 2 controller : *1
1 x USB 3.2 Gen 2 front panel connector port(s)
ASMedia® USB 3.2 Gen 2 controller : *1
2 x USB 3.2 Gen 2 (up to 10Gbps) port(s) (2 at back panel, , Type-A + USB Type-CTM)
Intel® X299 Chipset :
8 x USB 3.2 Gen 1 port(s) (4 at back panel, , 4 at mid-board)
Intel® X299 Chipset :
6 x USB 2.0 port(s) (2 at back panel, , 4 at mid-board)

OC Design - ASUS PRO Clock II Technology
5-Way Optimization by Dual Intelligent Processors 5
- 5-Way Optimization tuning key perfectly consolidates TPU, EPU, DIGI+ VRM, Fan Xpert 4, and Turbo Core App
AI Overclocking
ASUS 5X Protection III :
- ASUS SafeSlot Core: Fortified PCIe Slot prevents damage
- ASUS LANGuard: Protects against LAN surges, lightning strikes and static-electricity discharges!
- ASUS Overvoltage Protection: World-class circuit-protecting power design
- ASUS Stainless-Steel Back I/O: 3X corrosion-resistance for greater durability!
- ASUS Enhanced DRAM Overcurrent Protection - Short circuit damage prevention
- ASUS ESD Guards - Enhanced ESD protection
ASUS SafeSlot - Protect your graphics card Investment
AURA :
- Aura RGB Strip Headers
- Aura Lighting Effects Synchronization with compatible ASUS ROG devices
- Addressable Gen 2 Header
ASUS Exclusive Features :
- USB BIOS FlashBack™
- AI Suite 3
- Ai Charger
- Onboard Button : Power
- ASUS UEFI BIOS EZ Mode featuring friendly graphics user interface
- ASUS CrashFree BIOS 3
- Turbo LAN
- Armoury Crate
- Pre-mounted I/O Shield
- ASUS NODE: hardware control interface
- BIOS FlashBack™ Button
ASUS Quiet Thermal Solution :
- Stylish Fanless Design with M.2 Heat-sink solution
- ASUS Fan Xpert 4
ASUS Q-Design :
- ASUS Q-Code
- ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED, HDD LED)
- ASUS Q-Slot
- ASUS Q-DIMM
- ASUS Q-Connector
Intel® Virtual RAID on CPU (VROC) ready
DIY Friendly Design
- ProCool II
- SafeSlot

1 x PS/2 keyboard/mouse combo port(s)
1 x LAN (RJ45) port(s)
4 x USB 3.2 Gen 1
2 x USB 2.0 (one port can be switched to USB BIOS FlashBack™)
1 x Optical S/PDIF out
5 x Audio jack(s)
1 x USB BIOS FlashBack™ Button(s)
2 x USB 3.2 Gen 2 (up to 10Gbps) ports (Type-A + USB Type-CTM)

1 x AAFP connector
2 x Aura RGB Strip Headers
1 x Addressable Gen 2 header(s)
1 x USB 3.2 Gen 1 front panel TypeC™ connector
2 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 4 USB 3.2 Gen 1 port(s)
2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)
2 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x 4 mode)
1 x COM port(s) connector(s)
8 x SATA 6Gb/s connector(s)
1 x M.2_FAN connector
1 x VROC_HW_Key
1 x CPU Fan connector(s)
1 x CPU OPT Fan connector(s)
2 x Chassis Fan connector(s)
1 x W_PUMP+ connector
1 x AIO_PUMP connector
1 x Thunderbolt header (5-pin) for ASUS ThunderboltEX series support
1 x 24-pin EATX Power connector(s)
2 x 8-pin EATX 12V Power connectors
1 x Front panel audio connector(s) (AAFP)
1 x System panel(s) (Q-Connector) (Chassis intrusion header is inbuilt)
1 x Thermal sensor connector(s)
1 x Power-on button(s)
1 x Clear CMOS jumper(s)
1 x Node Connector(s)
1 x CPU_OV jumper
1 x Q-Code

User's manual
1 x Vertical M.2 bracket set
1 x ASUS Fan Holder
4 x SATA 6Gb/s cable(s)
2 x M.2 Screw Package
1 x Supporting DVD
1 x Q-Connector
1 x Extension Cable for RGB strips (80 cm)
1 x Extension cable for Addressable LED

128 Mb Flash ROM, UEFI AMI BIOS, PnP, SM BIOS 3.1, ACPI 6.1, Multi-language BIOS, ASUS EZ Flash 3, CrashFree BIOS 3, F11 AI OC Guide, F6 Qfan Control, F3 My Favorites, Last Modified log, F9 Search, F12 PrintScreen, F4 AURA ON/OFF and ASUS DRAM SPD (Serial Presence Detect) memory information

WfM 2.0, DMI 3.0, WOL by PME, PXE

Drivers
ASUS Utilities
EZ Update
Anti-virus software (OEM version)

Windows® 10 64-bit

ATX Form Factor
12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )

* 1. PCIEX1_1 shares bandwidth with Wi-Fi E Key. PCIEX1_1 is disabled by default.
PCIEX1_2 shares bandwidth with SATA6G_7. PCIEX1_2 is disabled by default.
* 2. PCIeX16_3 will be disabled when using 28-lane CPU.
* 3. The M.2_2 socket shares bandwidth with SATA6G_1 port when using M.2 SATA devices.
* 4. The M.2_1 PCIe mode source is from X299 Chipset when using 44 and 28-lane CPU.
* 5. The SATA6G_7 shares bandwidth with PCIeX1_2.
* 6. The M.2 PCIE mode source from X299 Chipset supports Intel® Optane Memory