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MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX

SKU
PRO B840M-B
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£84.78 £70.65
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Overview
Socket AM5, AMD B840 Chipset, 2 x DDR5-SDRAM up to 128GB, LAN, 1 x RJ-45, 4 x SATA III, 2 x M.2(M), UEFI AMI, Micro ATX
  • Supports AMD RyzenTM 9000 / 8000 / 7000 Series Desktop Processors
  • Supports DDR5 Memory, Dual Channel DDR5 8000+ MT/s (OC)
  • Ultra Performance: Direct 7+2+1 Power System with P-PAK, 8-pin CPU power connector, Core Boost, Memory Boost, 6-layer PCB made by 2oz thickened copper
  • EZ DIY: EZ M.2 Clip II and EZ PCIe Clip II
  • Lightning Fast Game experience: PCIe 4.0 slot and Lightning Gen 4 x4 M.2
  • 2.5G LAN: the remarkable solution for professional and multimedia use, delivering secure, stable, and high-speed networking and data transmission
  • Audio Boost: Reward your ears with studio grade sound quality for the most immersive gaming experience
More Information
Processor socket Socket AM5
Component for PC
Motherboard form factor Micro ATX
Compatible processor series AMD Ryzen 7000 Series,AMD Ryzen 8000 Series,AMD Ryzen 9000 Series
SKU PRO B840M-B
EAN 4711377360166
Manufacturer MSI
Availability In Stock
Product Videos View Video
PDF URLs View PDF
Description
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.

Specifications
Internal I/O
Number of M.2 (M) slots2
Number of SATA Express connectors0
USB 3.2 Gen 2 (3.1 Gen 2) connectors1
Total number of SATA connectors4
Supported storage drive interfacesM.2, Micro SATA III
USB 2.0 connectors4
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
mSATA ports quantity0
Number of SATA connectors0
Number of SATA III connectors4
Number of SATA II connectors0
Number of chassis fan connectors5
RGB LED pin headerYes
Number of CPU fan connectors1
Number of water pump connectors1
Number of RGB LED pin headers3
Technical details
Motherboard chipset familyAMD
Motherboard chipsetAMD B840
Supported processor socketsSocket AM5
On-board graphics cardNo
HDMI version2.1
Motherboard form factormicro ATX
Component forPC
Total number of SATA connectors4
Audio
Audio output channels7.1 channels
Performance
Number of HDDs supported4
Supported storage drive typesHDD & SSD
Windows operating systems supportedWindows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B840
RAID levels0, 1, 10
Supported processor socketsSocket AM5
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 slots2
Memory slots typeDIMM
Supported memory typesDDR5-SDRAM
Memory channelsDual-channel
Supported memory clock speeds4800,5600,8000 MHz
Maximum internal memory128 GB
Supported memory clock speed (max)8000 MHz
ECC сompatibilityNon-ECC
Storage controllers
Number of HDDs supported4
Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2, Micro SATA III
RAID levels0, 1, 10
Number of storage drives supported6
RAID supportYes
Graphics
On-board graphics cardNo
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity4
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 quantity0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity0
USB 2.0 ports quantity2
VGA (D-Sub) ports quantity0
HDMI version2.1
HDMI ports quantity1
Ethernet LAN (RJ-45) ports1
DVI-D ports quantity0
Network
Ethernet LANYes
Wi-FiNo
LAN controllerRealtek RTL8125D
Ethernet interface type2.5 Gigabit Ethernet
Features
Windows operating systems supportedWindows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B840
Supported processor socketsSocket AM5
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Audio chipRealtek ALC897
Product colourBlack
Expansion slots
Number of M.2 (M) slots2
PCI Express x16 slots2
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
BIOS
BIOS typeUEFI AMI
BIOS memory size256 Mbit
ACPI version6.5
System Management BIOS (SMBIOS) version3.7
Software
Windows operating systems supportedWindows 11 x64
Weight & dimensions
Width226 mm
Depth243.8 mm
Other features
mSATA ports quantity0
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SKU
PRO B840M-B
B550M PRO-VDH WIFI
B550-A PRO
90MB14U0-M0EAY0
90MB14I0-M0EAY0
90MB14V0-M0EAY0
Manufacturer
MSI
MSI
MSI
ASUS
ASUS
ASUS
Processor manufacturer
AMD
AMD
AMD
AMD
AMD
AMD
Motherboard form factor
micro ATX
micro ATX
ATX
ATX
micro ATX
micro ATX
Processor socket
Socket AM5
Socket AM4
Socket AM4
Socket AM4
Socket AM4
Socket AM4
Supported memory types
DDR5-SDRAM
DDR4-SDRAM
DDR4-SDRAM
DDR4-SDRAM
DDR4-SDRAM
DDR4-SDRAM
Component for
PC
PC
PC
N/A
N/A
N/A
Number of memory slots
2 to 3
4 to 6
4 to 6
4 to 6
4 to 6
4 to 6
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