ASUS ROG Strix B850-A Gaming WiFi AMD AM5 B850 ATX Motherboard 14+2+2 Power Stages, DDR5 AEMP, 2.5G LAN, WiFi 7 with Q-Antenna, 4X M.2, PCIe 5.0, USB 20Gbps Type-C, AI Networking II, ASUS AI Advisor

ASUS ROG Strix B850-A Gaming WiFi AMD AM5 B850 ATX Motherboard 14+2+2 Power Stages, DDR5 AEMP, 2.5G LAN, WiFi 7 with Q-Antenna, 4X M.2, PCIe 5.0, USB 20Gbps Type-C, AI Networking II, ASUS AI Advisor

CPU
AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors*
Chipset
AMD B850 Chipset
Memory
4 x DIMM slots, max. 192GB, DDR5
Supports up to 8000+MT/s (OC) with Ryzen 9000 & 8000 & 7000 Series Processors
 ECC and Non-ECC, Un-buffered DIMM
Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO)
ASUS Enhanced Memory Profile (AEMP)
* Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration,

** Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
Graphics
1 x DisplayPort*
1 x HDMI port**
- Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications.
* Supports max. 8K@30Hz as specified in DisplayPort 1.4
** Supports 4K@60Hz as specified in HDMI 2.1
***VGA resolution support depends on processors' or graphic cards' resolution.
Expansion Slots
AMD Ryzen 9000 & 7000 Series Desktop Processors
1 x PCIe 5.0 x16 slot with Q-Release Slim
AMD Ryzen 8000 Series Desktop Processors
1 x PCIe 5.0 x16 slot with Q-Rlease Slim (supports PCIe 4.0 x8 or x4 mode)*
AMD B850 Chipset
1 x PCIe 4.0 x16 slot (supports x4 mode)**
* Specifications vary by CPU types.
** PCIEX16(G4) slot (supports x4 mode) from AMD B850 Chipset shares bandwidth with M.2_3

Storage
Total supports 4 x M.2 slots and 2 x SATA 6Gb/s ports

AMD Ryzen 7000 & 9000 Series Desktop Processors
M.2_1 (Key M), type 2242/2260/2280 (supports PCIe 5.0x4 mode)
M.2_2 (Key M), type 2280/22110 (supports PCIe 4.0 x4 mode)
AMD Ryzen 8000 Series Desktop Processors
M.2_1 (Key M), type 2242/2260/2280 (supports PCIe 4.0x4 mode)
M.2_2 (Key M), type 2280/22110 (supports PCIe 4.0 x4/x2 mode)*

AMD B850 Chipset
M.2_3 (Key M), type 2280 (supports PCIe 4.0 x4)**
M.2_4 (Key M), type 2280 (supports PCIe 4.0 x4)
2 x SATA 6Gb/s ports
* Specifications vary by CPU types.
** M.2_3 slot shares bandwidth with PCIEX16(G4). When PCIEX16(G4) slot is operating, M.2_3 will be disabled.

AMD RAIDXpert2 Technology
Ryzen 9000 Series Processors: RAID 0/1/5/10
Ryzen 8000 Series Processors: RAID 0/1
Ryzen 7000 Series Processors: RAID 0/1/10
Ethernet
1 x Intel 2.5Gb Ethernet
ASUS LANGuard
Wireless & Bluetooth
Wi-Fi 7*
2x2 Wi-Fi 7 (802.11be)
Supports 2.4/5/6GHz frequency band**
Supports Wi-Fi 7 160MHz bandwidth, up to 2.9Gbps ​​transfer rate.
Bluetooth v5.4***

*Wi-Fi features may vary depending on the operating system
For Windows 11, Wi-Fi 7 will require 24H2 or later version for full functions, Windows 11 21H2/22H2/23H2 only supports Wi-Fi 6E.
For Windows 10, only Wi-Fi 6 is supported.
** Wi-Fi 6GHz frequency band and bandwidth regulation may vary between countries.
***The Bluetooth version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications.
USB
Rear USB (Total 10 ports)
1 x USB 20Gbps port (1 x USB Type-C)
3 x USB 10Gbps ports (2 x Type-A + 1 x USB Type-C)
4 x USB 5Gbps ports (4 x Type-A)
2 x USB 2.0 ports (2 x Type-A)

Front USB (Total 7 ports)
1 x USB 10Gbps connector (supports USB Type-C)
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
* USB Type-C power delivery output: max. 5V/3A
Audio
ROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4080*
 - Impedance sense for front and rear headphone outputs
 - Supports: Jack-detection, Multi-streaming, Front Panel MIC Jack-retasking
 - High quality 120 dB SNR stereo playback output and 110 dB SNR recording input
 - Supports up to 32-Bit/384 kHz playback on front panel
Audio Features
- SupremeFX Shielding Technology
-Savitech SV3H712 AMP
- Rear optical S/PDIF out port
- Premium audio capacitors
-Audio cover
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
** The LINE OUT port on the rear panel does not support spatial audio. If you wish to use spatial audio, make sure to connect your audio output device to the audio jack on the front panel of your chassis or use a USB interface audio device.
Back Panel I/O Ports
1 x USB 20Gbps port (1 x USB Type-C)
3 x USB 10Gbps ports (2 x Type-A + 1 x USB Type-C)
4 x USB 5Gbps ports (4 x Type-A)
2 x USB 2.0 ports (2 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x Wi-Fi module
1 x Intel 2.5Gb Ethernet port
2 x Audio jacks
1 x Optical S/PDIF out port
1 x BIOS FlashBack button
1 x Clear CMOS button
Internal I/O Connectors
Fan and Cooling Related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
4 x 4-pin Chassis Fan headers
Power Related
1 x 24-pin Main