MSI
MSI PRO B840M-B AM5 Micro ATX Motherboard
£95.99
✔ UK-based seller
✔ Tracked delivery on all orders
✔ Genuine products
✔ Fast dispatch within 1–2 business days
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Estimated delivery between June 08 and June 10.
Delivery Information
Processing Time
Orders are typically processed and dispatched within 1–2 business days (Monday–Friday).
Orders placed after 3:00 PM (UK time) will be processed the next business day.
Delivery Time
Estimated delivery time within the United Kingdom is 3–5 business days after dispatch.
Delivery times are estimates and may vary depending on courier delays, location, or peak periods.
£95.99
£95.99
MSI PRO B840M-B is a compact Micro ATX motherboard designed for AMD Ryzen 7000, 8000, and 9000 Series processors on the AM5 platform. Built on the AMD B840 chipset with DDR5 memory, two PCIe 4.0 M.2 slots, 2.5GbE LAN, and EZ Debug LED, it offers a straightforward and affordable entry point for the AM5 platform.
UK-based seller
Tracked delivery across the UK
Genuine product from trusted distributors
Key Features
- AMD B840 chipset, AM5 socket - supports Ryzen 7000, 8000 and 9000 Series processors
- Micro ATX form factor (243.84 x 226mm)
- DDR5 memory - 2 slots, up to 128GB, up to DDR5-8000 (OC)
- 1x PCIe 4.0 x16 slot for GPU (EZ PCIe Clip II)
- 1x PCIe 4.0 x1 slot
- 2x PCIe 4.0 x4 M.2 slots (EZ M.2 Clip II)
- 4x SATA 6Gb/s ports, RAID 0/1/10
- Realtek 8125D 2.5GbE LAN (no Wi-Fi)
- Realtek ALC897 7.1-Channel HD Audio
- 3x Addressable RGB V2 headers + 1x RGB header
- 4x EZ Debug LED + 1x EZ Memory Detection LED
- Flash BIOS + Clear CMOS buttons on rear panel
- Triple display output: VGA + HDMI (no DisplayPort)
Product Overview
The MSI PRO B840M-B is a compact and practical Micro ATX board for AMD Ryzen AM5 builds on the B840 chipset. DDR5 memory support up to DDR5-8000 with two DIMM slots covers mainstream workloads. Two PCIe 4.0 x4 M.2 slots with EZ M.2 Clip II provide tool-free NVMe storage installation. EZ Debug LED and EZ Memory Detection LED simplify troubleshooting. Flash BIOS on the rear panel enables BIOS updates without a CPU or RAM installed. The board measures 243.84 x 226mm — slightly narrower than standard Micro ATX.
Delivery & Fulfilment
This product is sold by TechFinder UK, a UK-based sole trader business.
All hardware is sourced through established distribution partners.
Orders are dispatched within 1-2 business days with tracked delivery across the United Kingdom.
Why Buy from TechFinder UK?
- UK-based sole trader - genuine products, real accountability
- Sourced through established distribution partners
- Secure checkout with buyer protection
- Tracked UK delivery, dispatched within 1-2 business days
- Pre- and post-purchase support available
Specifications
| Chipset | AMD B840 |
| Socket | AM5 (Ryzen 7000 / 8000 / 9000 Series) |
| Form Factor | Micro ATX (243.84 x 226mm) |
| Memory | 2x DDR5 DIMM, up to 128GB, up to DDR5-8000 (OC) |
| PCIe Slots | 1x PCIe 4.0 x16, 1x PCIe 4.0 x1 |
| M.2 Slots | 2x PCIe 4.0 x4 |
| SATA Ports | 4x SATA 6Gb/s (RAID 0/1/10) |
| LAN | Realtek 8125D 2.5GbE |
| Wireless | None |
| Audio | Realtek ALC897 7.1-Channel HD Audio |
| Rear I/O | 2x USB 2.0, 4x USB 5Gbps Type-A, 1x VGA, 1x HDMI, 1x LAN, 3x Audio jacks, 1x Flash BIOS, 1x Clear CMOS |
| Internal Headers | 4x USB 2.0, 3x USB 5Gbps, 3x ARGB V2, 1x RGB, 1x TPM, 1x COM, 4x EZ Debug LED, 1x EZ Memory Detection LED |
| BIOS | UEFI AMI BIOS, Flash BIOS |
Box Contents
- Motherboard
- 1x SATA cable
- 2x EZ M.2 Clip II + remover
- I/O Shield
- Quick Installation Guide
Product Identification
Model: PRO B840M-B
EAN: 4711377360166
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