ASUS PRIME B840M-A-CSM AMD B840 Socket AM5 micro ATX

ASUS

90MB1J10-M0EAYC

New product

41 Items

Shipping 2025-11-24 days

229,00 € tax incl.

BIOS
BIOS memory size256 Mbit
BIOS typeUEFI AMI
Expansion slots
1st M.2 highest PCI Express generation4.0
1st M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
2nd M.2 largest key size2280
3rd M.2 highest PCI Express generation3.0
3rd M.2 largest key size2280
Number of M.2 (M) slots3
PCI Express x16 (Gen 3.x) slots2
PCI Express x16 (Gen 4.x) slots1
Features
Audio output channels7.1 channels
Component forPC
Motherboard chipsetAMD B840
Motherboard chipset familyAMD
Motherboard form factormicro ATX
Power source typeATX
Product colourGrey
Windows operating systems supportedWindows 10 x64
Windows operating systems supportedWindows 11
Graphics
Maximum resolution7680 x 4320 pixels
Parallel processing technology supportNot supported
Internal I/O
ATX Power connector (24-pin)Yes
CPU fan connectorYes
EPS power connector (8-pin)Yes
Front panel audio connectorYes
Front panel connectorYes
Number of chassis fan connectors2
Number of COM connectors1
Number of CPU fan connectors2
Number of EPS power connectors (8-pin)1
Number of RGB LED pin headers3
Number of SATA III connectors4
RGB LED pin headerYes
S/PDIF out connectorYes
TPM connectorYes
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
Memory
ECC сompatibilityECC & Non-ECC
Maximum internal memory192 GB
Memory channelsDual-channel
Memory slots typeDIMM
Number of memory slots4
Supported memory clock speed (max)7600 MHz
Supported memory typesDDR5-SDRAM
Unbuffered memoryYes
Network
Ethernet interface type2.5 Gigabit Ethernet
Ethernet LANYes
Wi-FiNo
Other features
Quick installation guideYes
Weight910 g
Packaging content
Cables includedSATA
Screws includedYes
Packaging data
Package depth275 mm
Package height67.5 mm
Package weight1.45 kg
Package width275 mm
Processor
Compatible processor seriesAMD Ryzen 9000 Series
Compatible processor seriesAMD Ryzen 7000 Series
Compatible processor seriesAMD Ryzen 8000 Series
Processor manufacturerAMD
Processor socketSocket AM5
Supported processor socketsSocket AM5
Rear panel I/O ports
DisplayPort version1.4
DisplayPorts quantity1
Ethernet LAN (RJ-45) ports1
HDMI ports quantity1
HDMI version2.1
Headphone outputs1
Line-inYes
USB 2.0 ports quantity4
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity2
Storage controllers
Number of HDDs supported4
Number of storage drives supported7
RAID levels1
RAID levels10
RAID levels5
RAID supportYes
Supported storage drive interfacesM.2, SATA III
Supported storage drive typesHDD & SSD
Weight & dimensions
Depth244 mm
Width244 mm

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