MSI PRO B550-S WIFI6E ATX AM4 Motherboard

Description

Overview

The MSI PRO B550‑S WIFI6E is an ATX B550 motherboard that supports AMD AM4 desktop processors and DDR4 memory. It combines PCIe 4.0 support for GPU and CPU‑sourced M.2 storage with a pre‑installed Wi‑Fi 6E module and modern rear I/O including USB 10Gbps Type‑C, making it suitable for Ryzen‑based workstations and mainstream desktop builds that need up‑to‑date connectivity.

Key features

• AM4 socket with AMD B550 chipset — supports Ryzen 5000, 5000 G‑Series, 4000 G‑Series and 3000 Series processors.
• Form factor: ATX (243.84mm x 304.8mm).
• Memory: 4× DDR4 DIMM slots, up to 128GB total; A‑XMP OC modes with supported speeds up to 4800+ MT/s (depends on CPU and memory configuration).
• Storage: 2× M.2 (M.2_1: PCIe 4.0 x4 / SATA, supports 22110/2280/2260/2242; M.2_2: PCIe 3.0 x4, supports 2280/2260/2242) and 4× SATA 6Gb/s ports.
• Expansion: 2× PCI‑E x16 slots (PCI_E1 Gen4 x16 from CPU; PCI_E2 Gen3 up to x4 from chipset) and 1× PCI‑E x1 slot.
• Networking: Onboard Wi‑Fi 6E (pre‑installed M.2 Key‑E module, dual‑band 1T1R) and Realtek RTL8111H 1Gb Ethernet.
• Audio and display: Realtek ALC897 7.1‑channel audio and HDMI 1.4 (4K @ 30Hz when CPU has integrated graphics).

Who it suits

This board is aimed at builders who want an AM4 (Ryzen) ATX platform with PCIe 4.0 capability, integrated Wi‑Fi 6E and modern USB connectivity without stepping up to higher‑end X570 class features. It is a sensible choice for mainstream gaming, home office and content‑creation systems using AM4 processors.