MotherboardsAsus
ASUS PRIME B850M-A WIFI
MPN: 31156
Key specifications
SocketAM5
Form factormATX
ChipsetAMD B850 Chipset
Memory typeDDR5
M.2 slots6
Max MemoryUnknown
Full Specifications24 fields
General
Model
PRIME B850M-A WIFI
News Updates
- Please visit our
- GLOBAL website
- to check and download the latest updates.
Cpu
AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors
Chipset
AMD B850 Chipset
Memory
- 4 x DIMM slots, max. 256GB, 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)
- * Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
Graphics
- 2 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.
Expansion Slots
- AMD Ryzen™ 9000 & 7000 Series Desktop Processors
- 1 x PCIe 5.0 x16 slot (supports x16 mode)
- AMD Ryzen™ 8000 Series Desktop Processors
- 1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
- AMD B850 Chipset
- 1 x PCIe 4.0 x16 slot (supports x1 mode)
- * Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/ 1037507/).
- ** Specifications vary by CPU types.
Storage
- Supports 3 x M.2 slots and 4 x SATA 6Gb/s ports
- AMD Ryzen™ 9000 & 7000 Series Desktop Processors
- M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode)
- M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
- AMD Ryzen™ 8000 Series Desktop Processors
- M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
- M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4/x2 mode)
- AMD B850 Chipset
- M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
- 4 x SATA 6Gb/s ports
- * Specifications vary by CPU types.
- 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 Realtek 2.5Gb Ethernet
- ASUS LANGuard
Wireless Bluetooth
- "Wi-Fi 6E
- 2x2 Wi-Fi 6E (802.11ax)
- Supports 2.4/5/6GHz frequency band
- Bluetooth® v5.3
- * WiFi 6E 6GHz regulatory may vary between countries, supported only in Windows 11 or later.
- ** The Bluetooth® version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications."
Usb
- Rear USB (Total 8 ports)
- 2 x USB 10Gbps ports (2 x Type-A )
- 2 x USB 5Gbps ports (2 x Type-A)
- 4 x USB 2.0 ports (4 x Type-A)
- Front USB (Total 7 ports)
- 1 x USB 5Gbps 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
- Realtek 7.1 Surround Sound High Definition Audio CODEC
- - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- - Supports up to 24-Bit/192 kHz playback
- Audio Features
- - Audio Shielding
- - Premium audio capacitors
- - Dedicated audio PCB layers
- * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Back Panel I O Ports
- 2 x USB 10Gbps ports (2 x Type-A)
- 2 x USB 5Gbps ports (2 x Type-A)
- 4 x USB 2.0 ports (4 x Type-A)
- 2 x DisplayPort
- 1 x HDMI™ port
- 1 x Wi-Fi module
- 1 x Realtek 2.5Gb Ethernet port
- 3 x Audio jacks
- 1 x BIOS FlashBack™ button
Internal I O
- 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
- 3 x 4-pin Chassis Fan headers
- Power Related
- 1 x 24-pin Main Power connector
- 1 x 8-pin +12V CPU Power connectors
- 1 x 4-pin +12V CPU Power connectors
- Storage Related
- 3 x M.2 slots (Key M)
- 4 x SATA 6Gb/s ports
- USB
- 1 x USB 5Gbps 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
- Miscellaneous
- 3 x Addressable RGB Gen 2 headers
- 1 x Clear CMOS header
- 1 x Chassis Intrusion header
- 1 x COM Port header
- 1 x Front Panel Audio header (F_AUDIO)
- 1 x S/PDIF Out header
- 1 x SPI TPM header (14-1 pin)
- 1 x 10-1 pin System Panel header
Special Features
- ASUS 5X PROTECTION III
- - DIGI+ VRM
- - LANGuard
- - Overvoltage protection
- - SafeSlot
- - Stainless-steel back I/O
- ASUS Q-Design
- - Q-Antenna
- - Q-Dashboard
- - Q-DIMM
- - Q-LED Core
- - Q-Slot
- ASUS Thermal Solution
- - M.2 heatsink
- - VRM heatsink design
- ASUS EZ DIY
- - BIOS FlashBack™ button
- - BIOS FlashBack™ LED
- - Pre-mounted I/O shield
- - SafeSlot
- Aura Sync
- - Addressable RGB Gen 2 headers
Software Features
- ASUS Exclusive Software
- Armoury Crate
- - Aura Creator
- - Aura Sync
- - Fan Xpert 2+
- ASUS AI Advisor
- ASUS Driver Hub
- ASUS GlideX
- TurboV Core
- ASUS CPU-Z
- Norton 360 Deluxe (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
Bios
256 Mb Flash ROM, UEFI AMI BIOS
Manageability
WOL by PME, PXE
Accessories
- Cables
- 2 x SATA 6Gb/s cables
- Miscellaneous
- 1 x ASUS WiFi Q-Antenna
- 1 x M.2 rubber package
- 2 x Screw packages for M.2 SSD
- Documentation
- 1 x Quick start guide
Operating System
Windows® 11, Windows® 10 64-bit
Form Factor
- mATX Form Factor
- 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
Physical Dimensions
Length Mm
243.8
Width Mm
243.8
Height Mm
619.8
Best indexed price
Price unavailable
Retailer offers
Amazon UKSearch link
Check price at AmazoneBay UKSearch link
Check price at eBayMore retailers coming
We only list a retailer once we hold verified offer data for it. No placeholder prices, ever.
