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MSI PRO B840M-B AMD AM5 mATX Motherboard

Name: MSI PRO B840M-B AMD AM5 mATX Motherboard
Brand: MSI
Price: 15300 BDT
Availability: InStock

Model: PRO B840M-BItem #: msi-pro-b840m-b-motherboard

৳15,300~~৳15,500~~Save 1%

In stockverified 22 Sept 2026

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We're finishing our supply arrangements. Prices and stock here are live — ordering reopens shortly.

Delivery

Inside Dhaka: ৳60 · 1–2 days
Outside Dhaka: ৳120 · 2–4 days

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Key highlights

AMD B840 Chipset
2 M.2 slots
Memory Support DDR5 8000 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s; Ryzen™ 9000 Series Processors max. overclocking frequency:; • 1DPC 1R Max speed up to 8000+ MT/s; • 1DPC 2R Max speed up to 7200+ MT/s; ; Supports AMD POR Speed and JEDEC Speed; Supports Memory Overclocking and AMD EXPOTM; Supports Dual-Channel mode; Supports Non-ECC, Un-buffered memory; Supports CUDIMM, Clock Driver bypass mode only RAM type
mATX; 226mmx243.84mm Form factor

Overview

The MSI PRO B840M-B Motherboard is an efficient choice for AMD Ryzen 9000, 8000, and 7000 Series desktop CPUs, with an AM5 socket and the AMD B840 chipset. This MSI PRO B840M-B mATX Motherboard has a tiny mATX form factor of 226mm x 243.84mm and supports up to 128GB DDR5 memory over two UDIMM slots, with overclocking speeds to 8000 MHz for Ryzen 9000 Series CPUs. It supports AMD EXPO™, dual-channel setups, and non-ECC memory. The MSI PRO B840M-B AM5 mATX Motherboard has 1x HDMI 2.1 output, which supports up to 4K 60Hz, and 1x VGA for legacy displays. Storage choices include two M.2 slots with PCIe 4.0 x4 compatibility for 2280/2260 devices and four SATA 6G connections that allow RAID for both SATA and NVMe SSDs. Expansion is adaptable, featuring 1x PCIe 4.0 x16 and 1x PCIe 3.0 x1 slots that adjust PCIe bandwidth dependent on CPU series. Connectivity features The Realtek 8125D 2.5G LAN features numerous USB ports, including USB 2.0, USB 5Gbps Type-A, and USB 5Gbps Type-C, as well as internal headers for fans, RGB lighting, TPM 2.0, and front-panel audio. Realtek ALC897 provides 7.1-channel high-definition audio. The Flash BIOS Button, EZ Debug LED, and EZ Memory Detection LED are all user-friendly features that facilitate setup and debugging. With dual M.2 support, high-speed memory capability, extensive connectivity, and robust performance, the MSI PRO B840M-B Motherboard is an excellent choice for both productivity and gaming builds.

Specifications

Chipset: AMD B840
M.2 slots: 2
RAM type: Memory Support DDR5 8000 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s; Ryzen™ 9000 Series Processors max. overclocking frequency:; • 1DPC 1R Max speed up to 8000+ MT/s; • 1DPC 2R Max speed up to 7200+ MT/s; ; Supports AMD POR Speed and JEDEC Speed; Supports Memory Overclocking and AMD EXPOTM; Supports Dual-Channel mode; Supports Non-ECC, Un-buffered memory; Supports CUDIMM, Clock Driver bypass mode only
Form factor: mATX; 226mmx243.84mm
Memory — Type: DDR5
Memory — Slots: 2x UDIMM
Highlights — Model: PRO B840M-B
Graphics — Graphics: 1x HDMI; Support HDMITM 2.1, maximum resolution of 4K 60Hz; 1x VGA; Support VGA, maximum resolution of 2048x1536 50Hz, 2048x1280 60Hz, 1920x1200 60Hz

Show all 27 specifications

Expansion Slots — PCI: 1x PCI-E x16 slot; 1x PCI-E x1 slot; PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU); PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset); ; PCI_E1 slot; • Supports PCIe 4.0 x16 (For Ryzen™ 9000/ 7000 Series processors); • Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors); • Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processors)
Highlights — Features: 2x M.2 Slot, Realtek 8125D 2.5G LAN
Memory — Maximum Memory: 128GB
Basic Information — BIOS: Flash BIOS Button
Connector & Ports — HDMI: 1x HDMI
Connector & Ports — RAID: Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices; Supports RAID 0 and RAID 1 for M.2 NVMe storage devices
Basic Information — Audio: Realtek ALC897; 7.1-Channel High Definition Audio
Connector & Ports — Audio: 1x Front Audio (JAUD)
Others — Special Features: 4x EZ Debug LED; 1x EZ Memory Detection LED
Highlights — Supported RAM: 2x DDR5 UDIMM, Up to 8000 (OC) MHz, Max. 128GB
Connector & Ports — USB (s): 2x USB 2.0 (Rear); 4x USB 2.0 (Front); 4x USB 5Gbps Type A (Rear); 2x USB 5Gbps Type A (Front); 1x USB 5Gbps Type C (Front)
Connector & Ports — VGA (s): 1x VGA
Highlights — Graphics Output: 1x HDMI 2.1, 1x VGA, Maximum resolution of 4K 60Hz
Connector & Ports — LAN Port (s): Realtek 8125D 2.5G LAN
Basic Information — Supported CPU: Supports AMD Ryzen 9000/ 8000/ 7000 Series Desktop Processors; Socket AM5
Connector & Ports — Supported Storage: 2x M.2; M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices; M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices; 4x SATA 6G; ; M2_2 slot; • Supports up to PCIe 4.0 x4; • Supports up to PCIe 4.0 x2 (For Ryzen™ 8500/ 8300 Series processors)
Connector & Ports — Internal I/O Ports: 1x Power Connector(ATX_PWR); 1x Power Connector(CPU_PWR); 1x CPU Fan; 2x System Fan; 2x Front Panel (JFP); 1x Chassis Intrusion (JCI); 1x Front Audio (JAUD); 1x Com Port (JCOM); 3x Addressable V2 RGB LED connector (JARGB_V2); 1x RGB LED connector(JRGB); 1x TPM pin header(Support TPM 2.0); 4x USB 2.0 ports; 2x USB 5Gbps Type A ports; 1x USB 5Gbps Type C ports
Warranty Information — Manufacturing Warranty: 3 Years
Connector & Ports — TPM (Trusted Platform Module ): 1x TPM pin header(Support TPM 2.0)

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Price	৳15,300	৳15,000	৳15,200	৳15,200
Availability	In stock	In stock	In stock	Out of stock
Brand	MSI	MSI	GIGABYTE	GIGABYTE
M.2 slots	2	—	—	—
RAM type	Memory Support DDR5 8000 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s; Ryzen™ 9000 Series Processors max. overclocking frequency:; • 1DPC 1R Max speed up to 8000+ MT/s; • 1DPC 2R Max speed up to 7200+ MT/s; ; Supports AMD POR Speed and JEDEC Speed; Supports Memory Overclocking and AMD EXPOTM; Supports Dual-Channel mode; Supports Non-ECC, Un-buffered memory; Supports CUDIMM, Clock Driver bypass mode only	Memory Support DDR5 6800+(OC)/ 6600(OC)/ 6400(OC)/ 6200(OC)/ 6000(OC)/ 5800(OC)/ 5600(JEDEC)/ 5400(JEDEC)/ 5200(JEDEC)/ 5000(JEDEC)/ 4800(JEDEC) MHz; Max. overclocking frequency:; • 1DPC 1R Max speed up to 6800+ MHz; • 1DPC 2R Max speed up to 6400+ MHz; • 2DPC 1R Max speed up to 6000+ MHz; • 2DPC 2R Max speed up to 5600+ MHz; ; Supports Intel XMP 3.0 OC; Supports Dual-Controller Dual-Channel mode; Supports non-ECC, un-buffered memory	Support for DDR5 8000(OC)/ 7800(OC)/ 7600(OC)/ 7200(OC)/ 7000(OC)/ 6800(OC)/ 6600(OC)/ 6400(OC)/ 6200(OC)/ 6000(OC)/ 5600(OC)/ 5200/ 4800 MT/s memory modules; Dual channel memory architecture; Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules; Support for AMD EXtended Profiles for Overclocking (AMD EXPO™) and Extreme Memory Profile (XMP) memory modules	Support for DDR5 7200(O.C.) /7000(O.C.) /6800(O.C.) /6600(O.C.) / 6400(O.C.) / 6200(O.C.) / 6000(O.C.) / 5800(O.C.) / 5600(O.C.) / 5400(O.C.) / 5200(O.C.) / 4800 / 4000 MT/s memory modules; Dual channel memory architecture; Support for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules (operate in non-ECC mode); Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules; Support for Extreme Memory Profile (XMP) memory module
Form factor	mATX; 226mmx243.84mm	mATX; 243.84mmx243.84mm	Micro ATX Form Factor; 24.4cm x 24.4cm	Micro ATX Form Factor; 23.0cm x 21.5cm
Chipset	AMD B840	INTEL B760	AMD B650	Intel B760 Express Chipset