MSI PRO B840M-B AM5 Micro ATX Motherboard
£92.37 inc VAT
In stock
In stock
More Ways to Pay
-
Buy now, pay later with Klarna at checkout
-
Pay in 3 interest-free payments with PayPal at checkout
About This Item
- AMD B840 micro ATX motherboard for Socket AM5
- Supports AMD Ryzen 7000/8000/9000 Series processors
- 2x M.2 slots with PCIe 4.0 support for NVMe SSDs
- 4x SATA III connectors for additional storage
- 2x DDR5 DIMM slots supporting up to 128GB
Payment Methods:
You may also like
MSI PRO B840M-B | AMD B840 Micro ATX Motherboard
The MSI PRO B840M-B motherboard with AMD B840 chipset and Socket AM5 is a micro ATX platform built for professionals who need reliable multitasking and efficient performance. Designed for AMD Ryzen 7000, 8000, and 9000 Series processors, this board supports DDR5 memory and delivers stable power delivery through its 7+2+1 digital VRM design.
Key Specifications
| Metric | Spec. |
|---|---|
| Processor Socket | Socket AM5 |
| Memory Support | DDR5, 2x DIMM slots, up to 128 GB |
| Maximum Memory Speed | 8000 MHz |
| Storage Interfaces | M.2, Micro SATA III |
| USB Ports | 4x USB 3.2 Gen 1, 2x USB 2.0 |
| PCIe Slots | 2x PCIe x16 |
| LAN | 2.5 GbE via Realtek RTL8125D |
| Audio | Realtek ALC897, 7.1 channels |
| Form Factor | micro ATX (226 x 243.8 mm) |
Direct 7+2+1 Power Design for Stable Performance
The PRO B840M-B uses a 7+2+1 digital power phase design to deliver clean, consistent power to your CPU. This architecture helps maintain peak performance during heavy workloads and multitasking, making it ideal for business users and creators who need dependable operation.
Enhanced Cooling for Long-Term Reliability
A chipset heatsink reduces dust build-up and noise while maintaining efficient heat dissipation. Combined with five chassis fan headers and one CPU fan header, the board offers flexible cooling options to keep temperatures in check during extended use.
High-Speed Storage and Connectivity
With two M.2 slots supporting PCIe 4.0 and four SATA III ports, you can install multiple SSDs and HDDs for fast data access. The board supports RAID 0, 1, and 10 configurations, giving you options for speed or redundancy. USB 3.2 Gen 1 ports provide quick connections for peripherals, while the 2.5 GbE LAN ensures low-latency networking.
What Is in the Box
- MSI PRO B840M-B motherboard
- I/O shield
- User manual
- Driver/software disc
- SATA cables (quantity may vary)
Things to Check First
- Confirm your CPU is compatible with Socket AM5 (Ryzen 7000/8000/9000 Series).
- Verify your case supports micro ATX dimensions (226 x 243.8 mm).
- Ensure your power supply has an 8-pin CPU connector.
- Check if your DDR5 memory is on the motherboard’s qualified vendor list.
Buyer FAQs
Does this motherboard support integrated graphics?
How many M.2 drives can I install?
What RAID levels are supported?
Is Wi-Fi included?
What is the maximum RAM capacity?
The short version
The MSI PRO B840M-B is a solid choice for professionals and small business users who want a dependable micro ATX platform with modern connectivity and strong power delivery. Its support for the latest Ryzen processors, DDR5 memory, and fast storage makes it future-proof for demanding workloads. Covered by the applicable manufacturer warranty.
| USB 3.2 Gen 2 3.1 Gen 2 connectors | 1 |
|---|---|
| USB 2.0 connectors | 4 |
| USB 3.2 Gen 1 3.1 Gen 1 connectors | 2 |
| Number of SATA III connectors | 4 |
| Number of chassis fan connectors | 5 |
| RGB LED pin header | Yes |
| Number of CPU fan connectors | 1 |
| Number of water pump connectors | 1 |
| Number of RGB LED pin headers | 3 |
| Total number of SATA connectors | 4 |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Processor socket | Socket AM5 |
| Number of memory slots | 2 |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| Supported memory clock speeds | 4800,5600,8000 MHz |
| Maximum internal memory | 128 GB |
| Supported memory clock speed max | 8000 MHz |
| ECC сompatibility | Non-ECC |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, Micro SATA III |
| RAID levels | 1, 10 |
| Number of storage drives supported | 6 |
| RAID support | Yes |
| On-board graphics card | No |
| USB 3.2 Gen 1 3.1 Gen 1 Type-A ports quantity | 4 |
| USB 2.0 ports quantity | 2 |
| HDMI ports quantity | 1 |
| Ethernet LAN RJ-45 ports | 1 |
| LAN controller | Realtek RTL8125D |
| Motherboard chipset family | AMD |
| Supported processor sockets | Socket AM5 |
| Audio output channels | 7.1 channels |
| Component for | PC |
| Audio chip | Realtek ALC897 |
| Product colour | Black |
| Number of M.2 M slots | 2 |
| PCI Express x16 slots | 2 |
| 1st M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 4.0 |
| 2nd M.2 largest key size | 2280 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| ACPI version | 6.5 |
| System Management BIOS SMBIOS version | 3.7 |
| Windows operating systems supported | Windows 11 x64 |
| Width | 226 mm |
| Depth | 243.8 mm |
| Distributor SKUs | 10459226, 127059, 4711377360166, 911-7E76-002 |
Reviews
Clear filtersThere are no reviews yet.