MSI PRO B550-S ATX Motherboard, AMD AM4, 4x DDR4, PCIe 4.0 x16, 2x M.2, 1G LAN, USB-C 10Gbps, HDMI
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MSI
MSI PRO B550-S ATX Motherboard, AMD AM4, 4x DDR4, PCIe 4.0 x16, 2x M.2, 1G LAN, USB-C 10Gbps, HDMI
€161.99 inc. VAT
7C56-098R
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MSI PRO B550-S — ATX Motherboard for AMD Ryzen AM4
AMD B550 · AM4ATX · 4× DDR4PCIe 4.0 x16 + M.2USB-C 10Gbps · 1G LAN
The MSI PRO B550-S is an ATX motherboard with the AMD B550 chipset for socket AM4, supporting Ryzen 5000, Ryzen 3000 and Ryzen 4000G/5000G desktop processors — a straightforward board for office, business and budget gaming PCs that need PCIe 4.0, four memory slots and two M.2 drives.
The CPU-connected PCIe 4.0 x16 slot and the first M.2 slot (PCIe 4.0 x4) give full bandwidth to a modern graphics card and NVMe SSD. Four DDR4 slots take up to 128GB, and the rear panel has 1 Gbps LAN, an HDMI output for Ryzen G-series graphics, USB 10Gbps Type-A and Type-C, and 7.1-channel audio.
Before you order: Not for Ryzen 7000/9000 (AM5) or DDR5 memory. The HDMI port only works with a Ryzen 4000G/5000G CPU that has integrated graphics; with other Ryzen CPUs you need a graphics card. No Wi-Fi or Bluetooth on board.
What's in the Box
- 1 × MSI PRO B550-S ATX motherboard
- MSI shows the bundled accessories only as a picture on its specification page — ask us if you need the exact list before ordering
What It Means in Practice
- Ryzen 5 5600 or Ryzen 7 5700X plus a PCIe 4.0 NVMe SSD on M.2_1 gives full Gen4 speed without a chipset bottleneck
- Four DDR4 slots: 2×16GB now, upgrade to 64GB later without replacing modules
- Second M.2 (PCIe 3.0 x4) shares bandwidth with the PCI_E2 slot — an NVMe drive in M.2_2 disables PCI_E2
- Six fan headers (CPU, pump/system combo, four system) and 2× ARGB + 1× RGB header for case lighting
- HDMI output is limited to 4K 30 Hz — fine for office displays, use a graphics card for 4K60
What Will Not Work
- AM5 CPUs (Ryzen 7000/8000/9000) and DDR5 memory
- Ryzen 5000/4000 mobile CPUs or Athlon models not listed by MSI — check the CPU support list
- Wi-Fi/Bluetooth — add a PCIe or USB adapter
- DisplayPort output from the board — only HDMI (4K 30 Hz) with G-series CPUs
- ECC memory: the board supports non-ECC unbuffered DDR4
Key Features
PCIe 4.0 ready
CPU PCIe 4.0 x16 for the graphics card and PCIe 4.0 x4 M.2 for NVMe.
Up to 128GB DDR4
4 DIMM slots, dual channel, A-XMP overclocking up to 4866+ MHz.
Modern rear I/O
USB 10Gbps Type-C and Type-A, 2× USB 5Gbps, 4× USB 2.0, HDMI, 1G LAN.
Business-friendly
TPM 2.0 header, COM header, Windows 10/11 64-bit support.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight · Buyer's Guide
The PRO B550-S is an honest AM4 board for upgrading or building on a budget: PCIe 4.0 where it matters, four RAM slots and full-size ATX. If you start from scratch and want a long upgrade path, AM5 is the better platform. See compatible DDR4 memory and our graphics cards.
✓ Buy it if you build or upgrade a Ryzen 5000 / 5000G PC and need a reliable ATX B550 board with PCIe 4.0.
✕ Skip it if you want Wi-Fi on board, DDR5 or a future CPU upgrade path (choose AM5).
→ Also consider MSI B550 boards with Wi-Fi, or an AM5 B650 board for Ryzen 7000/9000.
Not sure it fits your setup? Send us the model of your rack, switch or device and we will check compatibility before you order.
Features - MSI - 7C56-098R
More Details
Product Code
03:281402
EAN Code
4711377471282
Manufacturer
MSI