GIGABYTE B550M H DDR4 AMD Motherboard

The Gigabyte B550M H is a Micro-ATX form-factor motherboard built on the AMD B550 chipset for the AM4 socket, making it compatible with AMD Ryzen 5000 Series, Ryzen 5000 G-Series, Ryzen 4000 G-Series, and Ryzen 3000 Series processors. Designed as part of Gigabyte's Ultra Durable series, it delivers a stable and efficient power delivery platform through a 4+3 phase pure digital VRM solution with low RDS MOSFETs, supporting precise power control for demanding Ryzen CPUs. Memory support comes via two DIMM slots accommodating Dual Channel ECC and Non-ECC Unbuffered DDR4 modules. Expansion is handled by one PCIe 4.0 x16 slot for discrete graphics, along with a single M.2 slot supporting NVMe drives via PCIe 4.0 or PCIe 3.0 interfaces. For conventional storage, four SATA III ports running at 6 Gb/s are provided. Multi-GPU configurations are not supported. Connectivity at the rear includes six USB ports — two USB 2.0 and four USB 3.2 Gen 1 — alongside one HDMI and one D-Sub display output. The front panel headers offer two USB 2.0 ports and one USB 3.2 Gen 1 port. Networking is handled by a Realtek Gigabit Ethernet LAN port; Wi-Fi is not included. Audio is delivered through a Realtek ALC887 HD audio codec, supplemented by high-quality audio capacitors and a PCB-level audio noise guard that physically separates analog circuitry from digital noise sources. The board features RGB Fusion 2.0 with support for addressable LED and standard RGB LED strips, allowing flexible lighting customisation. Smart Fan 5 enables granular thermal management through multiple temperature sensor inputs and hybrid fan headers that support both PWM and voltage-mode fans, with a FAN STOP function for silent operation at low loads. The Q-Flash Plus feature allows BIOS updates without needing an installed CPU, memory, or graphics card — a practical convenience during platform bring-up. Anti-sulfur resistors and surge-protection ICs add to long-term board reliability. Verified Specifications: - Chipset: AMD B550 - Form Factor: Micro-ATX - CPU Socket: AM4 - Memory: 2 x DDR4 DIMM (Dual Channel, ECC/Non-ECC Unbuffered) - PCIe 4.0 x16 Slots: 1 - PCIe 3.0 Slots: 0 - M.2 Slots: 1 (PCIe 4.0/3.0 NVMe) - SATA III 6 Gb/s Ports: 4 - Rear USB: 2 x USB 2.0, 4 x USB 3.2 Gen 1 - Front USB Headers: 2 x USB 2.0, 1 x USB 3.2 Gen 1 - Display Outputs: 1 x HDMI, 1 x D-Sub - LAN: 1 x Realtek Gigabit Ethernet - Wi-Fi: No - Audio Codec: Realtek ALC887 - Multi-GPU Support: No