Motherboard - ASUS PRIME B840M-A-CSM Socket AM5 Micro ATX
Product reference: 14-4711387797204

Compatible with AMD Ryzen 7000, 8000, and 9000 series processors, it supports up to 192GB of DDR5 memory running at 7600MHz. The motherboard features dual-channel memory, 2.5 Gigabit Ethernet, and multiple expansion slots, including three M.2 slots and two PCIe x16 slots.

Motherboard - ASUS PRIME B840M-A-CSM Socket AM5 Micro ATX

Product reference: 14-4711387797204

Compatible with AMD Ryzen 7000, 8000, and 9000 series processors, it supports up to 192GB of DDR5 memory running at 7600MHz. The motherboard features dual-channel memory, 2.5 Gigabit Ethernet, and multiple expansion slots, including three M.2 slots and two PCIe x16 slots.

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ASUS PRIME B840M-A-CSM AM5 Micro ATX motherboard black

Compatible with AMD Ryzen 7000, 8000, and 9000 series processors, it supports up to 192GB of DDR5 memory running at 7600MHz. The motherboard features dual-channel memory, 2.5 Gigabit Ethernet, and multiple expansion slots, including three M.2 slots and two PCIe x16 slots.

  • Compatible with AMD Ryzen 7000, 8000 and 9000 series processors (Socket AM5)
  • Supports up to 192 GB DDR5-SDRAM with a maximum memory frequency of 7600 MHz
  • Equipped with 4 SATA III connectors and supports RAID levels 0, 1, 5 and 10
  • Includes 2 PCI Express x16 slots and 3 M.2 slots for expanded connectivity
  • Offers 7.1 channel audio output and HDMI 2.1 high-definition graphics (up to 7680 x 4320 pixels)

Processor

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

Graphics

Maximum resolution7680 x 4320 pixels

Features

Audio output channels7.1 channels
Motherboard format typemicro ATX
Power supply typeATX
Supported Windows operating systemsWindows 10 x64, Windows 11
Product colorGray
Motherboard chip familyAMD

Memory

Unbuffered memoryYes
Memory channelsDual channels
Maximum internal memory192GB
Supported memory frequency (max)7600MHz
Memory slot typeDIMMs
ECC compatibilityECC Non-ECC
Number of memory slots4
Supported memory typesDDR5-SDRAM

Weight and dimensions

Width244 mm
Depth244 mm

Network

Ethernet LANYes
Ethernet interface type2.5 Gigabit Ethernet

Internal I/O

EPS power connector (8-pin)Yes
S/PDIF output connectorYes
USB 3.2 Gen 1 connectors2
Number of SATA III connectors4
Front panel audio connectorYes
Number of chassis fan connectors2
USB 2.0 ports2
ATX power connector (24-pin)Yes
CPU fan connectorYes
TPM connectorYes
Number of COM ports1
Front panel connectorYes
RGB LED pin connectorYes
Number of CPU fan connectors2
Number of RGB LED pin connectors3

BIOS

BIOS typeUEFI AMI

Packaging details

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

Package contents

Cables includedSATA
Screws includedYes

Memory controllers

RAID levels0, 1, 5, 10
Supported storage drive typesHDD SSD
RAID supportYes
Number of supported storage drives7
Supported storage drive interfacesM.2, SATA III
Number of HDDs supported4

Rear panel I/O connectors

Number of HDMI ports1
Number of DisplayPort connectors1
Number of USB 2.0 ports4
HDMI version2.1
DisplayPort version1.4
Number of USB 3.2 Gen 2 Type-A ports2
Number of Ethernet LAN (RJ-45) ports1
Headphone outputs1
Line-inYes
Number of USB 3.2 Gen 1 Type-C ports1

Expansion slots

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

Other features

Weight910g
Quick Installation GuideYes
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