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ASUS PRIME B840M-A CSM AMD B840 mATX motherboard
ASUS
Motherboard
In Stock

ASUS PRIME B840M-A CSM AMD B840 mATX motherboard, DDR5, PCIe 4.0 Ready, 3xM.2 slots, 2.5Gb Ethernet, DisplayPort, HDMI, rear and front USB 5Gbps Type-C support, BIOS FlashBack, Corporate Stable Model

4.3(10)

RRP £146.86

£133.49
-1.1%

ASUS PRIME B840M-A CSM AMD B840 mATX motherboard has dropped 1.1% over the last 30 days, currently at £133.49.

Price last checked:

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.

Socket: AM5
Chipset: B840
Form Factor: Micro-ATX
Memory Type: DDR5
  • Corperate Stable Model: offers up to 36-month product lifecycle support and 6-month end-of-life notice, each purchase comes with ASUS Control Center Express server-grade IT management software
  • Ready for Advanced AI PC: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
  • AMD AM5 Socket: Ready for AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors
  • Enhanced Power Solution: 6-layer PCB, alloy chokes and durable capacitors for stable power delivery
  • Ultrafast Connectivity: PCIe 4.0 x16 slot, PCIe 4.0 M.2 slots, Realtek 2.5Gb Ethernet, rear USB 10Gbps Type-A ports, rear and front USB 5Gbps Type-C support
  • Comprehensive Cooling: VRM and M.2 heatsinks, PCH heatsink, hybrid fan headers and Fan Xpert 2+
  • DIY-Friendly Design: Pre-mounted I/O shield, BIOS FlashBack, M.2 heatsink, Q-Dashboard, Q-LED Core
  • Unmatched Personalization: Three Addressable Gen 2 headers, all configurable with ASUS-exclusive Aura Sync RGB lighting
  • Renowned Software: Armoury Crate, ASUS DriverHub, ASUS MyHotkey
View on Amazon

About This Product

The ASUS PRIME B840M-A CSM is a micro-ATX motherboard featuring DDR5 memory and the AMD B840M chipset. It offers a range of connectivity options, including 3x M.2 slots, 2.5Gb Ethernet, DisplayPort, and HDMI, as well as rear and front USB 5Gbps Type-C support. This motherboard is suitable for corporate and business users who require a stable and reliable platform for their systems, with features like BIOS FlashBack adding to its appeal.

Near its lowest price

At £133.49, ASUS PRIME B840M-A CSM AMD B840 mATX motherboard is at or near its lowest tracked price of £133.49. The 30-day average is £134.55, making this a good time to buy if you've been waiting for a deal.

Price History

Current Price£133.49
Average Price£134.55
Lowest Price£133.49
Highest Price£139.00
Price Trend (30d)
-1.1%

Historical Prices

DatePriceChange
13 Oct 2026, 00:25£133.49
No change
12 Oct 2026, 00:34£133.49
No change
11 Oct 2026, 00:34£133.49
No change
10 Oct 2026, 00:34£133.49
No change
9 Oct 2026, 00:36£133.49
No change
8 Oct 2026, 00:32£133.49
No change
7 Oct 2026, 00:34£133.49
No change
6 Oct 2026, 00:35£133.49
No change
5 Oct 2026, 00:38£133.49
No change
4 Oct 2026, 00:37£133.49
No change

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