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ASUS PRO B550M-C/CSM Business Motherboard Socket AM4 (AMD B550, Ryzen AM4, Micro-ATX, 2x M.2, PCIe 4.0, 1Gbit/s Ethernet, USB 3.2 Gen 2 Type C)

ASUS PRO B550M-C/CSM Business Motherboard Socket AM4
£106.39

RRP £143.99 · 26% under RRP

New, on Amazon.co.uk · as of

  • £105.28lowest we have recorded, 30 Oct 2026
  • £105.2830-day low
  • £105.2890-day low
  • £112.18typical price, last 90 days
  • 411 dayswe have checked this price for

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Specification

Model90MB15Q0-M0EAYC
BrandASUS
SocketAM4
ChipsetB550
Form factorMicro-ATX
MemoryDDR4
WiFiNo
First available on AmazonJan 2021 (5 yr 10 mo old)
Amazon ASINB08R8GKWYQ
Amazon sales rank#225,157 (lower sells more)

Read from the Amazon listing title. Confirm the details and the CPU support list on the maker’s website before you buy.

Guides: AMD B550 chipset guide · AMD AM4 socket guide

Stated in the Amazon listing

M.2 slots2
Newest PCIe generation statedPCIe 4.0
Wired LAN2.5GbE
Fastest USB-C port10 Gbps
Video outputsHDMI, DisplayPort

Read automatically from the listing’s title and feature bullets. A feature that is missing here is simply not mentioned in the listing; the board may still have it.

From the Amazon listing

The seller’s own description, as shown on Amazon.co.uk. We have not checked these claims.

Price history

£100£150£200£182.27 from 16 Nov 2025£163.97 from 24 Nov 2025£164.63 from 26 Nov 2025£164.62 from 30 Nov 2025£164.05 from 3 Dec 2025£164.27 from 4 Dec 2025£176.76 from 5 Dec 2025£159.38 from 8 Dec 2025£145.38 from 9 Dec 2025£166.72 from 19 Dec 2025£157.18 from 27 Dec 2025£165.78 from 3 Jan 2026£164.60 from 8 Jan 2026£165.93 from 19 Jan 2026£165.63 from 21 Jan 2026£167.13 from 4 Feb 2026£165.63 from 6 Feb 2026£136.60 from 7 Feb 2026£135.35 from 10 Feb 2026£136.60 from 19 Feb 2026£137.85 from 22 Feb 2026£138.10 from 3 Mar 2026£139.35 from 5 Mar 2026£138.40 from 10 Mar 2026£139.64 from 13 Mar 2026£140.89 from 17 Mar 2026£110.40 from 21 Mar 2026£114.52 from 23 Mar 2026£110.40 from 25 Mar 2026£114.54 from 26 Mar 2026£114.55 from 1 Apr 2026£116.06 from 1 Apr 2026£118.34 from 2 Apr 2026£116.56 from 3 Apr 2026£119.33 from 5 Apr 2026£119.34 from 7 Apr 2026£116.56 from 8 Apr 2026£120.01 from 11 Apr 2026£120.00 from 13 Apr 2026£121.14 from 13 Apr 2026£120.62 from 14 Apr 2026£113.29 from 15 Apr 2026£109.20 from 17 Apr 2026£111.84 from 20 Apr 2026£110.35 from 1 May 2026£110.60 from 19 May 2026£109.48 from 26 May 2026£112.72 from 30 May 2026£112.79 from 3 Jun 2026£112.81 from 9 Jun 2026£112.87 from 17 Jun 2026£111.52 from 18 Jun 2026£111.50 from 20 Jun 2026£111.52 from 21 Jun 2026£108.38 from 22 Jun 2026£111.07 from 23 Jun 2026£110.90 from 26 Jun 2026£110.83 from 29 Jun 2026£110.75 from 30 Jun 2026£110.68 from 2 Jul 2026£110.64 from 3 Jul 2026£110.63 from 4 Jul 2026£111.42 from 6 Jul 2026£110.21 from 7 Jul 2026£112.64 from 14 Jul 2026£130.12 from 28 Jul 2026£138.85 from 6 Aug 2026£117.13 from 6 Aug 2026£112.64 from 7 Aug 2026£111.67 from 22 Aug 2026£109.60 from 28 Aug 2026£112.18 from 18 Sep 2026£112.18 from 19 Sep 2026£145.66 from 23 Sep 2026£144.05 from 13 Oct 2026£145.66 from 14 Oct 2026£109.90 from 20 Oct 2026£109.32 from 21 Oct 2026£108.22 from 29 Oct 2026£105.28 from 30 Oct 2026£105.95 from 31 Oct 2026£105.94 from 3 Nov 2026£106.39 from 4 Nov 202616 Nov 2025May 20265 Nov 2026
  • £105.28lowest we have seen
  • £182.27highest
  • £112.18usual price, last 90 days
  • 16 Nov 2025tracked since
Price changes as a table
FromNew price
4 Nov 2026, 12:20£106.39
3 Nov 2026, 00:20£105.94
31 Oct 2026, 12:20£105.95
30 Oct 2026, 12:20£105.28
29 Oct 2026, 18:20£108.22
21 Oct 2026, 12:20£109.32
20 Oct 2026, 12:20£109.90
14 Oct 2026, 12:20£145.66
13 Oct 2026, 18:20£144.05
23 Sep 2026, 18:20£145.66
19 Sep 2026, 23:02£112.18
18 Sep 2026, 05:04£112.18
28 Aug 2026, 18:03£109.60
22 Aug 2026, 06:18£111.67
7 Aug 2026, 09:29£112.64
6 Aug 2026, 23:26£117.13
6 Aug 2026, 18:26no offer
6 Aug 2026, 14:35£138.85
30 Jul 2026, 01:12no offer
28 Jul 2026, 07:10£130.12
14 Jul 2026, 21:52£112.64
7 Jul 2026, 09:08£110.21
6 Jul 2026, 23:08£111.42
4 Jul 2026, 05:40£110.63
3 Jul 2026, 14:52£110.64
2 Jul 2026, 02:40£110.68
30 Jun 2026, 20:40£110.75
29 Jun 2026, 23:08£110.83
26 Jun 2026, 21:44£110.90
23 Jun 2026, 16:16£111.07

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