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ASUS Mainboard Prime B840M-A CSM1/9
ASUS

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

Part number
1818459
MPN
90MB1J10-M0EAYC
EAN
4711387797204

ASUS PRIME B840M-A-CSM, AMD, Socket AM5, AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series, Socket AM5, DDR5-SDRAM, 192 GB

Memory slots typeDIMM
Processor socketSocket AM5
ChipsatzB840
Mainboard FormfaktorMicro-ATX
Wi-FiNo
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5
All 86 specifications

Description

ASUS PRIME B840M-A-CSM. Processor manufacturer: AMD, Processor socket: Socket AM5, Compatible processor series: AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series. Supported memory types: DDR5-SDRAM, Maximum internal memory: 192 GB, Memory slots type: DIMM. Supported storage drive interfaces: M.2, SATA III, Supported storage drive types: HDD & SSD, RAID levels: 0, 1, 5, 10. Maximum resolution: 7680 x 4320 pixels. Ethernet interface type: 2.5 Gigabit Ethernet

Documents

Specifications

Memory slots typeDIMM
Processor socketSocket AM5
ChipsatzB840
Mainboard FormfaktorMicro-ATX
Wi-FiNo

Processor

Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5

Memory

Supported memory typesDDR5-SDRAM
Number of memory slots4
Maximum internal memory192 GB
Memory channelsDual-channel
ECC сompatibilityECC & Non-ECC
Supported memory clock speed (max)7600 MHz
Unbuffered memoryYes

Storage controllers

Supported storage drive interfacesM.2, SATA III
Supported storage drive typesHDD & SSD
Number of HDDs supported4
Number of storage drives supported7
RAID supportYes
RAID levels0, 1, 5, 10

Graphics

Parallel processing technology supportNot supported
Maximum resolution7680 x 4320 pixels

Internal I/O

USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
USB 3.2 Gen 2 (3.1 Gen 2) connectors0
Number of SATA III connectors4
S/PDIF out connectorYes
Front panel audio connectorYes
Front panel connectorYes
ATX Power connector (24-pin)Yes
CPU fan connectorYes
Number of CPU fan connectors2
Number of chassis fan connectors2
EPS power connector (8-pin)Yes
Number of EPS power connectors (8-pin)1
Number of COM connectors1
TPM connectorYes
RGB LED pin headerYes
Number of RGB LED pin headers3

Rear panel I/O ports

USB 2.0 ports quantity4
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity0
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
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity0
Ethernet LAN (RJ-45) ports1
VGA (D-Sub) ports quantity0
HDMI ports quantity1
DVI-D ports quantity0
HDMI version2.1
DisplayPorts quantity1
DisplayPort version1.4
Headphone outputs1
Line-inYes

Network

Ethernet LANYes
Ethernet interface type2.5 Gigabit Ethernet
Top Wi-Fi standardNot available

Features

Component forPC
Motherboard form factormicro ATX
Motherboard chipset familyAMD
Motherboard chipsetAMD B840
Audio output channels7.1 channels
Product colourGrey
Power source typeATX
Windows operating systems supportedWindows 10 x64, Windows 11

Expansion slots

PCI Express x16 (Gen 3.x) slots2
PCI Express x16 (Gen 4.x) slots1
Number of M.2 (M) slots3
1st M.2 largest key size2280
1st M.2 highest PCI Express generation4.0
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 generation3.0

BIOS

BIOS typeUEFI AMI
BIOS memory size256 Mbit

Packaging data

Package width275 mm
Package depth275 mm
Package height67.5 mm
Package weight1.45 kg

Weight & dimensions

Width244 mm
Depth244 mm

Packaging content

Cables includedSATA
Screws includedYes

Other features

Weight910 g
Quick installation guideYes
Weight1.35 kg

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