GIGABYTE B550M DS3H AC R2 Micro ATX Motherboard (AM4, B550)

Description

Overview

The GIGABYTE B550M DS3H AC R2 is a compact Micro‑ATX motherboard built around the AMD B550 chipset for Socket AM4. It supports AMD Ryzen 5000/4000/3000 series processors and offers a modern feature set for small‑form‑factor gaming and productivity systems, including PCIe 4.0 support for graphics and an M.2 slot, onboard Wi‑Fi and high‑quality onboard audio. ([gigabyte.com](https://www.gigabyte.com/ie/Motherboard/B550M-DS3H-AC-R2/sp))

Key features

• B550 chipset with 5+3 digital VRM design and 4‑layer PCB for stable power delivery.
• Supports up to 128GB across 4 DDR4 DIMMs with XMP support and a list of supported memory speeds up to DDR4‑4733 (O.C.).
• PCIe configuration: one CPU‑driven PCIe 4.0 x16 slot, one PCIe 3.0 x16 (x4) slot and one PCIe 3.0 x1 slot.
• Dual M.2 sockets — M.2 (CPU) supports PCIe 4.0 x4 with Ryzen 5000/3000 CPUs; second M.2 via chipset supports PCIe 3.0/SATA.
• Onboard Intel‑class Realtek Gigabit LAN and Realtek RTL8821CE Wi‑Fi 802.11ac (Wi‑Fi 5) with Bluetooth 5.0.
• Rear I/O includes HDMI (up to 4K@60Hz) and DisplayPort (up to 5120×2880@60Hz) for APUs that provide graphics output.
• RGB Fusion headers: three RGB + two ARGB headers for external lighting control.

The board also includes Realtek ALC1220 audio codec with 3 audio jacks, Q‑Flash Plus for BIOS updates without CPU/DRAM installed, four SATA 6Gb/s ports, multiple internal USB headers (including USB‑C via internal header), and support for Windows 10 and Windows 11 64‑bit. For exact CPU and memory compatibility, consult GIGABYTE’s CPU and memory support lists before purchase. ([gigabyte.com](https://www.gigabyte.com/ie/Motherboard/B550M-DS3H-AC-R2/sp))