ASUS PRIME B850M-A-CSM AMD B850 Socket AM5 micro ATX

PRIME B850M-A-CSM motherboard socket AMD AM5 (microATX, DDR5, PCIe 5.0, 3x M.2 slots, Realtek 2.5Gb Ethernet, DisplayPort, HDMI, BIOS FlashBack, Aura Sync, ASUS Control Center Express)
£154.56 £128.80
Availability:
In Stock
SKU
90MB1LQ0-M0EAYC
Internal I/O
Number of M.2 (M) slots3
USB 3.2 Gen 2 (3.1 Gen 2) connectors0
Front panel connectorYes
12V power connectorYes
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
TPM connectorYes
S/PDIF out connectorYes
Peripheral (Molex) power connectors (4-pin)1
Number of SATA III connectors4
Number of COM connectors1
Number of chassis fan connectors3
Front panel audio connectorYes
EPS power connector (8-pin)Yes
CPU fan connectorYes
Chassis intrusion connectorYes
ATX Power connector (24-pin)Yes
RGB LED pin headerYes
Number of CPU fan connectors1
Number of EPS power connectors (8-pin)1
Number of RGB LED pin headers3
Technical details
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
Supported processor socketsSocket AM5
Parallel processing technology supportNot supported
HDMI version2.1
Cooling typePassive
Motherboard form factormicro ATX
Component forPC
Audio
Audio output channels7.1 channels
Performance
Number of HDDs supported4
Supported storage drive typesHDD & SSD
Windows operating systems supportedWindows 10 x64, Windows 11
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
RAID levels0, 1, 5, 10
Supported processor socketsSocket AM5
Cooling typePassive
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Processor
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5
Processor socketSocket AM5
Memory
Number of memory slots4
Memory slots typeDIMM
Supported memory typesDDR5-SDRAM
Memory channelsDual-channel
Maximum internal memory256 GB
Unbuffered memoryYes
Supported memory clock speed (max)8000 MHz
ECC сompatibilityECC & Non-ECC
Maximum internal memory per slot64 GB
Storage controllers
Number of HDDs supported4
Supported storage drive typesHDD & SSD
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0
RAID levels0, 1, 5, 10
Number of storage drives supported7
RAID supportYes
Graphics
Parallel processing technology supportNot supported
Maximum resolution7680 x 4320 pixels
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity0
DisplayPort version1.4
USB 2.0 ports quantity4
VGA (D-Sub) ports quantity0
Microphone inYes
Headphone outputs1
HDMI version2.1
HDMI ports quantity1
Ethernet LAN (RJ-45) ports1
DVI-D ports quantity0
DisplayPorts quantity2
Line-inYes
Network
Ethernet LANYes
Wi-FiNo
Ethernet interface type2.5 Gigabit Ethernet
Top Wi-Fi standardNot available
Features
Power source typeATX
Windows operating systems supportedWindows 10 x64, Windows 11
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
Supported processor socketsSocket AM5
Cooling typePassive
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Product colourGrey
Expansion slots
Number of M.2 (M) slots3
PCI Express x16 (Gen 4.x) slots2
PCI Express x16 (Gen 5.x) slots1
1st M.2 largest key size2280
1st M.2 highest PCI Express generation5.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
3rd M.2 highest PCI Express generation4.0
4th M.2 largest key size2280
4th M.2 highest PCI Express generation4.0
BIOS
BIOS typeUEFI AMI
BIOS memory size256 Mbit
Power
Power source typeATX
Video
Maximum resolution7680 x 4320 pixels
Packaging data
Package width275 mm
Package depth275 mm
Package height67.5 mm
Package weight1.45 kg
Software
Windows operating systems supportedWindows 10 x64, Windows 11
Weight & dimensions
Package width275 mm
Package depth275 mm
Package height67.5 mm
Package weight1.45 kg
Width244 mm
Depth244 mm
Packaging content
Cables includedSATA
Screws includedYes
Other features
Package width275 mm
Package depth275 mm
Package height67.5 mm
Package weight1.45 kg