MSI PRO B850M-A WIFI PZ Micro‑ATX AM5 Motherboard

Description

Overview

The MSI PRO B850M-A WIFI PZ is a micro‑ATX (243.84mm x 243.84mm) AM5 motherboard built around the AMD B850 chipset. Designed for compact workstations and small gaming rigs, it combines modern connectivity — including PCIe 5.0, M.2 Gen5 storage and Wi‑Fi 7 — with a business‑style PRO series feature set and MSI’s Project Zero back‑connect PCB layout.

Key features

• Socket: AMD Socket AM5 — supports AMD Ryzen 9000, 8000 and 7000 series desktop processors.
• Memory: 4× DDR5 UDIMM slots, up to 256GB total; memory speeds supported to 8200+ MT/s (OC) and JEDEC ranges 4800–5600 MT/s.
• Expansion: 1× PCIe 5.0 x16 slot (from CPU), plus additional chipset PCIe slots.
• Storage: 2× M.2 slots (M.2_1 up to PCIe 5.0 x4; M.2_2 up to PCIe 4.0 x4) and 4× SATA 6Gb/s ports.
• Networking & audio: Built‑in Wi‑Fi 7 module (pre‑installed Key‑E), Bluetooth 5.4, Realtek 8126 5G LAN and Realtek ALC897 7.1 audio.
• Extras: Pre‑installed I/O shield, M.2 Shield FROZR, EZ debug LEDs, dual CPU power connectors and a supplemental 8‑pin PCIe power header.

This board is suitable for builders who want a small form‑factor AM5 platform without compromising on high‑speed storage or next‑generation PCIe and wireless features. Refer to MSI’s memory and CPU compatibility lists for specific modules and processor support before purchasing.