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ASUS PRIME B850M-A-CSM AM5 DDR5 PCIe 5.0 mATX Motherboard
MotherboardsAsus

ASUS PRIME B850M-A-CSM AM5 DDR5 PCIe 5.0 mATX Motherboard

MPN: 90MB1LQ0-M0EAYC

Key specifications

SocketAM5
Form factormATX
ChipsetAMD B850
Memory typeDDR5
M.2 slots3
Max Memory256 GB
Best indexed price
£150.46GBP
Indexed 20 Oct 2026 — verify at retailer. How we get prices

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Full Specifications31 fields

Additional Information

Model Number
90MB1LQ0-M0EAYC
Gtin
4711636054706

Additional Specifications

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

Core Specifications

Edition
PRIME B850M-A-CSM
Form Factor
MicroATX
Socket
AM5
Chipset
AMD B850

External Connectivity

Network Interface Type
Wired 2.5 Gigabit LAN (10/100/1000/2500)
Network Chip Modules
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

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

RAM Memory Support

Memory Type
DDR5
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

General

Audio
7.1 Channel HD Audio