MSI PRO B840M-B motherboard

MSI PRO B840M-B. 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: 128 GB, Memory slots type: DIMM. Supported storage drive interfaces: M.2, Micro SATA III, Supported storage drive types: HDD & SSD, RAID levels: 0, 1, 10. Ethernet interface type: 2.5 Gigabit Ethernet, LAN controller: Realtek RTL8125D. Component for: PC, Motherboard form factor: micro ATX, Motherboard chipset family: AMD

BUSINESS ELEGANCE
The PRO Series is tailored to professionals from all walks of life. The lineup features impressive performance and high quality, while aiming to provide users incredible experience. Users who care about productivity and efficiency can definitely count on the MSI PRO Series to assist you with multitasking and increasing efficiency.

MSI motherboards are designed with advanced hardware and technology, well-supporting the demanding computing usage of gaming and AI. Moreover, we also introduce AI to MSI Center and BIOS, making everything more effortless than before.

DIRECT 7+2+1 POWER DESIGN
Unleash and sustain the maximum performance with a VRM design built with a total of 7+2+1 digital power phases. With an 8-pin power connector, PRO B840M-B is ready for the challenge of heavy-loading tasks.

Chipset Heatsink
The chipset heatsink is designed to reduce dust and noise and capable of maintaining high efficiency of heat dissipation.

HIGH-BANDWIDTH AND LOW-LATENCY NETWORK
MSI's premium network solution provides incredible data transfer speed for demanding users.

Processor

Processor manufacturer: AMD
Processor socket: Socket AM5
Compatible processor series: AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor sockets: Socket AM5

Memory

Supported memory types: DDR5-SDRAM
Number of memory slots: 2
Memory slots type: DIMM
Memory channels: Dual-channel
ECC сompatibility: Non-ECC
Supported memory clock speeds: 4800,5600,8000 MHz
Supported memory clock speed (max): 8000 MHz
Maximum internal memory: 128 GB

Storage controllers

Supported storage drive types: HDD & SSD
Supported storage drive interfaces: M.2, Micro SATA III
Number of HDDs supported: 4
Number of storage drives supported: 6
Feature: RAID support
RAID levels: 0, 1, 10

Internal I/O

USB 2.0 connectors: 4
USB 3.2 Gen 1 (3.1 Gen 1) connectors: 2
USB 3.2 Gen 2 (3.1 Gen 2) connectors: 1
Number of SATA III connectors: 4
Total number of SATA connectors: 4
Number of CPU fan connectors: 1
Number of chassis fan connectors: 5
Number of water pump connectors: 1
Feature: RGB LED pin header
Number of RGB LED pin headers: 3

Rear panel I/O ports

USB 2.0 ports quantity: 2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 4
Ethernet LAN (RJ-45) ports: 1
HDMI ports quantity: 1
HDMI version: 2.1

Network

Feature: Ethernet LAN
Ethernet interface type: 2.5 Gigabit Ethernet
LAN controller: Realtek RTL8125D
Top Wi-Fi standard: Not available

Features

Motherboard chipset: AMD B840
Audio chip: Realtek ALC897
Audio output channels: 7.1 channels
Product colour: Black
Component for: PC
Motherboard form factor: micro ATX
Motherboard chipset family: AMD
Windows operating systems supported: Windows 11 x64

Expansion slots

PCI Express x16 slots: 2
PCI Express x16 (Gen 4.x) slots: 1
Number of M.2 (M) slots: 2
1st M.2 largest key size: 2280
1st M.2 highest PCI Express generation: 4.0
2nd M.2 largest key size: 2280
2nd M.2 highest PCI Express generation: 4.0

BIOS

BIOS type: UEFI AMI
BIOS memory size: 256 Mbit
ACPI version: 6.5
System Management BIOS (SMBIOS) version: 3.7

Weight & dimensions

Width: 226 mm
Depth: 243.8 mm