Audio port Input/Output connectors - 3
BIOS - ACPI version - 6.5
BIOS - BIOS memory size - 256 Mbit
BIOS - BIOS type - UEFI AMI
BIOS - System Management BIOS (SMBIOS) version - 3.7
Brand - MSI
BrandPartCode - PRO B840M-B
Category - Motherboards
Category Code - MBA
Chipset - AMD B840
Description - PRO B840M-B PRO B840M-B is engineered with many exclusive features of MSI, PCIe 4.0 M.2, EZ PCIe Clip II, 2.5G LAN, and Front Type-C, ready for the AMD Ryzen™ 9000 series processors. Supports AMD Ryzen™ 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
dimensionalWeight - 959
Expansion slots - 1st M.2 highest PCI Express generation - 4.0
Expansion slots - 1st M.2 largest key size - 2280
Expansion slots - 2nd M.2 highest PCI Express generation - 4.0
Expansion slots - 2nd M.2 largest key size - 2280
Expansion slots - Number of M.2 (M) slots - 2
Expansion slots - PCI Express x16 slots - 2
Features - Audio chip - Realtek ALC897
Features - Audio output channels - 7.1 channels
Features - Component for - PC
Features - Motherboard chipset - AMD B840
Features - Motherboard chipset family - AMD
Features - Motherboard form factor - micro ATX
Features - Product colour - Black
Features - Windows operating systems supported - Windows 11 x64
Form Factor - Micro-ATX
Frequency speed - 4800/5600/8000 MHz
Graphics - On-board graphics card - No
GTIN - 4711377360166
HDMI Input/Output connectors - 1
Integrated audio - Realtek ALC897
Integrated LAN - 2.5 Gigabit
Integrated video - Depending on CPU
Internal I/O - Number of chassis fan connectors - 5
Internal I/O - Number of CPU fan connectors - 1
Internal I/O - Number of RGB LED pin headers - 3
Internal I/O - Number of SATA III connectors - 4
Internal I/O - Number of water pump connectors - 1
Internal I/O - RGB LED pin header - Yes
Internal I/O - Total number of SATA connectors - 4
Internal I/O - USB 2.0 connectors - 4
Internal I/O - USB 3.2 Gen 1 (3.1 Gen 1) connectors - 2
Internal I/O - USB 3.2 Gen 2 (3.1 Gen 2) connectors - 1
LongDesc - BUSINESS ELEGANCEThe 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 DESIGNUnleash 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 HeatsinkThe chipset heatsink is designed to reduce dust and noise and capable of maintaining high efficiency of heat dissipation.HIGH-BANDWIDTH AND LOW-LATENCY NETWORKMSI’s premium network solution provides incredible data transfer speed for demanding users.
LongProductName - 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
LongSummaryDescription - 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
M.2 Expansion slots - 2
Memory - ECC сompatibility - Non-ECC
Memory - Maximum internal memory - 128 GB
Memory - Memory channels - Dual-channel
Memory - Memory slots type - DIMM
Memory - Number of memory slots - 2
Memory - Supported memory clock speed (max) - 8000 MHz
Memory - Supported memory clock speeds - 4800
Memory - Supported memory clock speeds - 4800,5600,8000 MHz
Memory - Supported memory clock speeds - 5600 MHz
Memory - Supported memory clock speeds - 8000 MHz
Memory - Supported memory types - DDR5-SDRAM
Memory slots - 2
Memory type - DDR5
Model - PRO B840M-B
Network - Ethernet interface type - 2.5 Gigabit Ethernet
Network - Ethernet LAN - Yes
Network - LAN controller - Realtek RTL8125D
Network - Wi-Fi - No
PCI-Express 3.0 1x Expansion slots - 1
PCI-Express 4.0 16x Expansion slots - 1
Processor - Compatible processor series - AMD Ryzen 7000 Series
Processor - Compatible processor series - AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Processor - Compatible processor series - AMD Ryzen 8000 Series
Processor - Compatible processor series - AMD Ryzen 9000 Series
Processor - Processor manufacturer - AMD
Processor - Processor socket - Socket AM5
Processor - Supported processor sockets - Socket AM5
producerCode - PRO B840M-B
productName - MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX
ProductName - PRO B840M-B
Product Net Weight - 0.7 kg
productSize - Normal
RAID - SATA 0, 1, 10; NVMe 0, 1
Rear panel I/O ports - Ethernet LAN (RJ-45) ports - 1
Rear panel I/O ports - HDMI ports quantity - 1
Rear panel I/O ports - HDMI version - 2.1
Rear panel I/O ports - USB 2.0 ports quantity - 2
Rear panel I/O ports - USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity - 4
Rear panel I/O ports - VGA (D-Sub) ports quantity - 1
RJ45 Input/Output connectors - 1
SATA Interface - Yes
ShortSummaryDescription - MSI PRO B840M-B, AMD, Socket AM5, AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series, Socket AM5, DDR5-SDRAM, 128 GB
sizeX - 285
sizeY - 66
sizeZ - 255
Socket - SAM5
Storage controllers - Number of HDDs supported - 4
Storage controllers - Number of storage drives supported - 6
Storage controllers - RAID levels - 0
Storage controllers - RAID levels - 0, 1, 10
Storage controllers - RAID levels - 1
Storage controllers - RAID levels - 10
Storage controllers - RAID support - Yes
Storage controllers - Supported storage drive interfaces - M.2, Micro SATA III
Storage controllers - Supported storage drive interfaces - M.2, SATA III
Storage controllers - Supported storage drive types - HDD & SSD
Title - MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX
Unit Box Height - 0.26
Unit Box Length - 0.28
Unit Box Width - 0.065
Unit Calculated Volume - 0.005751 cubm
Unit Calculated Weight - 1.07 kg
Units per Pallet - 0
Units per Shipping Box - 10
URL - https://www.msi.com/Motherboard/PRO-B840M-B/Overview
USB 2.0 Input/Output connectors - 2
USB 3.2 Input/Output connectors - 4
Vendor Homepage - www.msi.com/Motherboard/PRO-B840M-B/Specification
VGA Input/Output connectors - 1
Warranty - 36 months
WarrantyInfo -
warrantyLength - 36
warrantyType - G
weight - 960
Weight & dimensions - Depth - 243.8 mm
Weight & dimensions - Width - 226 mm
