ASUS Prime B850M-A WIFI

ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B850M-A WIFI motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

CPU

AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors Refer to www.asus.com for CPU support list.

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 DIMMDual channel memory architectureSupports 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, for more information please refer to CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/. Adjustments will be made based on the specifications of mass-produced memory products available on the market. Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.

Graphics

2 x DisplayPort1 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 Processors1 x PCIe 5.0 x16 slot (supports x16 mode)AMD Ryzen™ 8000 Series Desktop Processors1 x PCIe 4.0 x16 slot (supports x8/x4 mode)AMD B850 Chipset1 x PCIe 4.0 x16 slot (supports x4 mode) Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507/). Specifications vary by CPU types.- To ensure compatibility of the device installed, please refer to https://www.asus.com/support/download-center/ for the list of supported

Storage

Supports 3 x M.2 slots and 4 x SATA 6Gb/s portsAMD Ryzen™ 9000 & 7000 Series Desktop ProcessorsM.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 ProcessorsM.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 ChipsetM.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 TechnologyRyzen™ 9000 Series Processors: RAID 0/1/5/10Ryzen™ 8000 Series Processors: RAID 0/1Ryzen™ 7000 Series Processors: RAID 0/1/10

Ethernet

1 x Realtek 2.5Gb EthernetASUS LANGuard

Wireless & Bluetooth

Wi-Fi 6E2x2 Wi-Fi 6E (802.11ax)Supports 2.4/5/6GHz frequency bandBluetooth 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 ports2 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 playbackAudio 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 DisplayPort1 x HDMI™ port1 x Wi-Fi module1 x Realtek 2.5Gb Ethernet port3 x Audio jacks1 x BIOS FlashBack™ button

Internal I/O Connectors

Fan and Cooling Related1 x 4-pin CPU Fan header1 x 4-pin CPU OPT Fan header1 x 4-pin AIO Pump header3 x 4-pin Chassis Fan headersPower Related1 x 24-pin Main Power connector1 x 8-pin +12V CPU Power connectors1 x 4-pin +12V CPU Power connectorsStorage Related3 x M.2 slots (Key M)4 x SATA 6Gb/s portsUSB1 x USB 5Gbps connector (supports USB Type-C )1 x USB 5Gbps header supports 2 additional USB 5Gbps ports2 x USB 2.0 headers support 4 additional USB 2.0 portsMiscellaneous3 x Addressable RGB Gen 2 headers1 x Clear CMOS header1 x Chassis Intrusion header1 x COM Port header1 x Front Panel Audio header (F_AUDIO)1 x S/PDIF Out header1 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/OASUS Q-Design- Q-Antenna- Q-Dashboard- Q-DIMM- Q-LED Core- Q-SlotASUS Thermal Solution- M.2 heatsink- VRM heatsink designASUS EZ DIY- BIOS FlashBack™ button- BIOS FlashBack™ LED- Pre-mounted I/O shield- SafeSlotAura Sync- Addressable RGB Gen 2 headers

Software Features

ASUS Exclusive SoftwareArmoury Crate- Aura Creator- Aura Sync- Fan Xpert 2+ASUS AI AdvisorASUS Driver HubASUS GlideXTurboV CoreASUS CPU-ZNorton 360 Deluxe (60 Days Free Trial)WinRAR (40 Days Free Trial)UEFI BIOSASUS 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

Cables2 x SATA 6Gb/s cablesMiscellaneous1 x ASUS WiFi Q-Antenna1 x M.2 rubber package2 x Screw packages for M.2 SSDDocumentation1 x Quick start guide

Operating System

Windows 11, Windows 10 64-bit

Form Factor

mATX Form Factor9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)