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Learn more about ASUS ROG STRIX B850-A GAMING WIFI

Model

Brand

ASUS

Model

ROG STRIX B850-A GAMING WIFI

Part Number

90MB1J50-M0AAY0

Supported CPU

CPU Socket Type

AM5

CPU Type

Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series

Chipsets

Chipset

AMD B850

Memory

Number of Memory Slots

4x288pin (DDR5)

Maximum Memory Supported

192GB

Channel Supported

Dual Channel

ECC Supported

Yes

Buffer Supported

Un-buffered

Memory Feature

Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO)
ASUS Enhanced Memory Profile (AEMP)

Expansion Slots

PCI Express 5.0 x16

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)*

PCI Express 4.0 x16

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 Devices

SATA 6Gb/s

2 x SATA 6Gb/s

M.2

AMD Ryzen 7000 & 9000 Series Desktop Processors
M.2_1 (Key M), type 2242/2260/2280 (supports PCIe 5.0×4 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 4.0×4 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)

** M.2_3 slot shares bandwidth with PCIEX16(G4). When PCIEX16(G4) slot is operating, M.2_3 will be disabled.

SATA RAID

0/1/5/10

Onboard Audio

Audio Chipset

Realtek ALC4080

Audio Channels

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

Onboard LAN

Max LAN Speed

2.5Gbps

Wireless LAN

Wi-Fi 802.11 be

Bluetooth

Bluetooth 5.4

Rear Panel Ports

Back 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

Onboard USB

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

Other 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

Miscellaneous
3 x Addressable Gen 2 headers
1 x CPU Over voltage jumper
1 x Front Panel Audio header (F_AUDIO)
1 x Power button
1 x 10-1 pin Front System Panel header
1 x Thermal Sensor header
1 x Thunderbolt (USB4) header

Physical Spec

Form Factor

ATX

Dimensions (W x L)

12.0″ x 9.6″

Power Pin

1 x 24-pin Main Power connector
2 x 8-pin +12V CPU Power connector

Software Feature

BIOS Feature

256 Mb Flash ROM, UEFI AMI BIOS

Software

ROG Exclusive Software
– ROG CPU-Z
– Dolby Atmos
ASUS Exclusive Software
Armoury Crate
– AIDA64 Extreme (60 days free trial)
– Aura Creator
– Aura Sync
– GameFirst
– HWiNFO
– Power Saving
– Fan Xpert 4
ASUS DriverHub
ASUS GlideX
TurboV Core
Adobe Creative Cloud (Free Trial)
Norton 360 for Gamers (60 Days Free Trial)
WinRAR (40 Days Free Trial)
UEFI BIOS
ASUS EZ DIY
– ASUS CrashFree BIOS 3
– ASUS EZ Flash 3
– ASUS UEFI BIOS EZ Mode
– ASUS MyHotkey

Windows 11

Supported

Features

Features

Extreme Engine Digi+
– 5K Black metallic capacitors
ASUS Q-Design
– M.2 Q-Latch
– M.2 Q-Release
– M.2 Q-Slide
– PCIe Slot Q-Release Slim (with PCIe SafeSlot)
– Q-Antenna
– Q-Dashboard
– Q-DIMM
– Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
– Q-Slot
ASUS Thermal Solution
– M.2 heatsink backplate
– M.2 heatsink
ASUS EZ DIY
– BIOS FlashBack button
– BIOS FlashBack LED
– Clear CMOS button
– ProCool
– Pre-mounted I/O shield
– SafeSlot
– SafeDIMM
Aura Sync
– Addressable Gen 2 headers