GIGABYTE B550M S2H M-ATX DDR4 AMD Motherboard

The Gigabyte B550M S2H is a Micro-ATX (mATX) motherboard built around AMD’s B550 chipset and designed for Socket AM4 processors, making it compatible with a wide range of AMD Ryzen CPUs — consult Gigabyte’s official CPU support list to confirm compatibility with your specific processor. Power delivery is handled by a 5+3-phase pure digital VRM solution using Low RDS MOSFETs, ensuring clean and stable voltage regulation for your CPU under sustained workloads. The board accepts two DDR4 DIMM slots in dual-channel configuration, supporting Non-ECC Unbuffered memory at speeds up to 4266 MHz (XMP/OC), giving builders ample headroom for fast system memory. For storage, the B550M S2H features an M.2 connector that supports NVMe drives over PCIe 4.0 or PCIe 3.0, enabling fast storage speeds for OS drives and game libraries alike. The primary x16 PCIe slot accommodates a dedicated graphics card, while the onboard HDMI 2.1 output supports up to 4K/60p video output with 21:9 aspect ratio and HDCP 2.3 support for users relying on integrated graphics. Networking is handled by the Realtek 8118 Gaming GbE LAN controller, designed to prioritise game traffic on the local network. Audio circuitry benefits from high-end audio capacitors and a PCB-level audio noise guard that isolates sensitive analogue components from digital interference, improving output fidelity through the rear audio jacks. Fan and cooling management is covered by Gigabyte’s Smart Fan 5 system, which supports both PWM and voltage-mode fan headers and allows mapping fan curves to different thermal sensors on the board — a useful feature for compact mATX builds where airflow management is critical. RGB Fusion 2.0 provides onboard lighting control and supports external 5V addressable LED strips of up to 300 LEDs. Protection features include anti-surge ICs and enhanced ESD resistance on the LAN port and other I/O, helping safeguard components against static discharge and power irregularities. Verified Specifications: – Form Factor: Micro-ATX (244 x 205 mm) – CPU Socket: AMD AM4 – Chipset: AMD B550 – Memory: 2 x DDR4 DIMM, Dual Channel, Non-ECC Unbuffered, up to 4266 MHz – Storage: 1 x M.2 (PCIe 4.0/3.0, NVMe) – Display Output: HDMI 2.1 (4K/60p, HDCP 2.3) – LAN: Realtek 8118 Gaming GbE – USB (rear I/O): includes 2 x USB 2.0 ports – VRM: 5+3-phase pure digital with Low RDS MOSFETs – RGB: RGB Fusion 2.0 with addressable LED support (5V, up to 300 LEDs) – Fan Control: Smart Fan 5 (PWM + Voltage mode headers) – Weight: approx. 95 g