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Asus Prime B850M-A WIFI (Socket AM5) DDR5 Micro-ATX Motherboard
MotherboardsAsus

Asus Prime B850M-A WIFI (Socket AM5) DDR5 Micro-ATX Motherboard

MPN: 90MB1LN0-M0EAY0

Key specifications

SocketAM5
Form factormATX
ChipsetAMD B850
Memory typeDDR5
M.2 slots3
Max Memory256 GB
Best indexed price
£133.47GBP
Indexed 20 Oct 2026 — verify at retailer. How we get prices

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Full Specifications47 fields

Additional Information

Model Number
90MB1LN0-M0EAY0
Gtin
4711636051125

Additional Specifications

Water Cooled
No
Cooling
Passive Heatsinks
Qpi Speed
N/A
Dimensions
244 x 244 mm
Note
-

Colour

Primary Colour
Black

Core Specifications

Edition
PRIME B850M-A WIFI
Form Factor
MicroATX
Chipset
AMD B850

CPU

Cpu Manufacturer
AMD
Socket
AM5

External Connectivity

Network Interface Type
802.11ax Wi-Fi 6E LAN Wired 2.5 Gigabit LAN (10/100/1000/2500)
Network Chip Modules
1 x 802.11ax WiFi 6E + BT5.3 1 x Realtek (2.5GbE LAN)
Rear I O Connectors
1 x BIOS Flashback Button 2 x DisplayPort 1.4 1 x HDMI 2.1 1 x Line In 1 x Line Out 1 x Mic-In 1 x RJ-45 4 x USB 2.0 2 x USB 3.2 Gen1 Type-A 2 x USB 3.2 Gen2 Type-A 1 x WiFi 802.11ax 6E / Bluetooth 5.3

Fan Header

4 Pin Fan Connectors
6

Form Factor

Motherboard Formfactor
Micro-ATX

Graphics Support

Primary Gpu Interface
PCIe 5.0 (x16)
Nvidia Sli Support
N/A
Amd Crossfire Support
N/A
Integrated Graphics
Requires Processor Graphics or Discrete GPU
On Board Graphics Connectors
DisplayPort 1.4 HDMI 2.1

Internal Connectivity

Expansion Slots
1 x M.2, 22-42/60/80, PCIe Gen4x4 1 x M.2, 22-80/110, PCIe Gen4x4 1 x M.2, 22-80/110, PCIe Gen5x4 1 x PCIe 4.0 x16 (x4 Bandwidth) 1 x PCIe 5.0 x16 4 x SATA 6GB/ s
Sata Support
SATA3
Raid Support Via
Yes
Storage Mode Support
RAID 0 RAID 1 RAID 10 RAID 5
Internal I O
1 x 24-pin (Power) 1 x 4-pin (Power) 1 x 4-pin AIO Pump Connector 3 x 4-pin CHA_FAN connector 1 x 4-pin CPU Fan Connector 1 x 4-pin CPU OPT Fan Connector 1 x 8-pin (Power) 3 x Addressable Gen 2 Header 1 x Chassis Intrusion connector 1 x Clear CMOS Header 1 x Front Panel Audio Header 3 x M.2 1 x S/PDIF-Out Header 4 x SATA III - 6Gb/s 1 x Serial (COM) Header 1 x System panel connector 1 x TPM (SPI_TPM) header 2 x USB 2.0 Header 1 x USB 3.2 Gen1 1 x USB 3.2 Gen1 Header

Internal Ports

Cpu Power Supply
1x 4-Pin + 1x 8-Pin

Lighting

Lighting Rgb
Yes

Memory

Max Memory
256 GB
Memory Type
DDR5
Memory Form Factor
DIMM
Memory Slots
4x

Motherboard

Motherboard Chipset
AMD B850

RAM Memory Support

Memory Channel
Dual (2)
Memory Type Ecc
ECC/Non-ECC
Memory Type R U
UDIMM (Unbuffered)
Memory Speed Mhz
DDR5 - 8200(OC)
Max Memory Capacity
256GB

Wi

Fi Lan Lan
Yes
Fi Lan Lan Ports
1x 2.5 Gbit/s
Fi Lan Wi Fi Bluetooth
Yes

General

Audio
7.1 Channel HD Audio