MSI PRO B840M-B - Motherboard - micro ATX - Socket AM5 - AMD B840 Chipset - USB 3.2 Gen 2, USB 3.2 Gen 1, USB-C 3.2 Gen 1 - 2.5 Gigabit LAN - onboard graphics (CPU required) - HD Audio (8-channel)

Category: Motherboards (for AMD Processors)
Code: PRO B840M-B
Brand: MSi
Warranty: 12 Months
For illustrative purpose only
Stock Qty Est. Delivery Price
VAT
CAPSE 1 31/03/2026 unknown 722.42
DK773  186  15/04/2026 unknown 814.53
DK773 0 unknown 814.53
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Product Description
MSI PRO B840M-B - motherboard - micro ATX - Socket AM5 - AMD B840
Product Type
Motherboard - micro ATX
Chipset Type
AMD B840
Processor Socket
1 x Socket AM5
Compatible Processors
Ryzen (supports Ryzen 7000/8000/9000 Series)
Max RAM Size
128 GB
RAM Supported
2 DIMM slots - DDR5, non-ECC, on-die ECC, unbuffered
Storage Ports
4 x SATA-600 (RAID), 2 x M.2
USB / FireWire Ports
4 x USB 3.2 Gen 1 + 2 x USB 2.0 + (1 x USB-C 3.2 Gen 1 + 2 x USB 3.2 Gen 1 + 4 x USB 2.0 via headers)
Audio
HD Audio (8-channel)
LAN
2.5 Gigabit Ethernet
Product Type
Motherboard - micro ATX
Chipset Type
AMD B840
Processor Socket
Socket AM5
Max Processors Qty
1
Compatible Processors
Ryzen (supports Ryzen 7000/8000/9000 Series)
Max Size
128 GB
Technology
DDR5
Bus Clock
4800 MT/s, 5600 MT/s, 5600 MT/s (O.C.), 7200 MT/s (O.C.), 8000 MT/s (O.C.)
Supported RAM Integrity Check
Non-ECC, on-die ECC
Registered or Buffered
Unbuffered
Features
AMD EXPO technology, dual channel memory architecture
Type
HD Audio (8-channel)
Audio Codec
Realtek ALC897
Compliant Standards
High Definition Audio
Network Controller
Realtek RTL8125D
Network Interfaces
2.5 Gigabit Ethernet
Expansion Slots
1 x CPU ¦ 2 x DIMM 288-pin ¦ 1 x PCIe 4.0 x16 ¦ 1 x PCIe 3.0 x1 ¦ 2 x M.2 socket (2260/2280 M.2 Key M slot)
Storage Interfaces
SATA-600 -connectors: 4 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10 ¦ PCIe 4.0 -connectors: 2 x M.2 - RAID 0 / RAID 1
Interfaces
1 x HDMI ¦ 1 x VGA ¦ 1 x LAN (2.5Gigabit Ethernet) ¦ 2 x USB 2.0 ¦ 4 x USB 3.2 Gen 1 ¦ 1 x microphone - mini-jack ¦ 1 x audio line-in - mini-jack ¦ 1 x audio line-out - mini-jack
Internal Interfaces
1 x USB-C 3.2 Gen 1 - header ¦ 2 x USB 3.2 Gen 1 - header ¦ 4 x USB 2.0 - header ¦ 1 x audio - header ¦ 1 x serial - header ¦ 1 x SPI - header
Power Connectors
24-pin main power connector, 8-pin ATX12V connector
BIOS Type
AMI
BIOS Features
MSI ClickBIOS
Hardware Features
7+2+1 Phase Power Design, Frozr AI Cooling, MSI AI Engine, MSI Companion, MSI LAN Manager, EZ PCie Clip II, EZ M.2 Clip II, EZ Debug LED, MSI Core Boost, MSI Audio Boost, MSI Memory Boost, ESD Protection, 6 Layer PCB, 2oz Copper PCB, Surface Mount Technology (SMT), transient voltage suppressors, MSI Stainless Steel Back I/O, pre-mounted I/O shield, CUDIMM support, chipset heatsink, MSI Mystic Light
Included Accessories
2 x EZ M.2 clip II, EZ M.2 clip II remover
Cables Included
1 x Serial ATA cable
Width
24.384 cm
Depth
22.6 cm
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