GIGABYTE B550M Gaming AM4 DDR4 AMD Motherboard

The Gigabyte B550M Gaming is a Micro ATX motherboard built on the AMD B550 chipset for the AM4 platform, designed to support 3rd Generation AMD Ryzen processors and 3rd Generation AMD Ryzen with Radeon Graphics processors. Measuring 24.4 cm x 20.5 cm, it fits neatly into compact Mid-Tower and Micro ATX cases while delivering a feature set that punches above its form factor. At its core, the board employs a 5+3 Phase Pure Digital VRM solution with low RDS MOSFETs, delivering clean and stable power to the CPU across demanding workloads. Memory support spans two DDR4 DIMM slots capable of holding up to 64 GB of system memory (32 GB per DIMM), with validated speeds ranging from DDR4-2133 up to DDR4-5000 (O.C.), plus support for XMP profiles and ECC Un-buffered DIMMs. For storage, a single M.2 Socket 3 connector (types 2242/2260/2280) supports PCIe 4.0 x4 NVMe SSDs when paired with discrete Ryzen processors, or PCIe 3.0 x4 with Ryzen APUs. Four SATA 6 Gb/s ports round out storage options with RAID 0, 1, and 10 support. The primary x16 PCIe slot runs at PCIe 4.0 x16 mode with non-APU Ryzen CPUs, and two additional PCIe 3.0 x1 slots serve expansion cards. Display output is handled by onboard graphics through Ryzen APUs via D-Sub (1920×1200@60 Hz), DVI-D (1920×1200@60 Hz), and HDMI 2.1 (up to 4096×2160@60 Hz with HDCP 2.3 and HDR), allowing up to three simultaneous displays. Networking is provided by a Realtek GbE LAN chip with the Realtek 8118 gaming bandwidth management utility bundled for prioritising game traffic. Audio is handled by a Realtek ALC887 codec supporting High Definition Audio in 2/4/5.1/7.1-channel configurations, paired with high-quality audio capacitors and a PCB-level audio noise guard that isolates analogue audio circuitry from digital interference. Connectivity on the rear panel includes four USB 3.2 Gen 1 ports, two USB 2.0 ports, PS/2 keyboard/mouse, RJ-45, three audio jacks, D-Sub, DVI-D, and HDMI. Internal headers add one USB 3.2 Gen 1 header and one USB 2.0 header. RGB Fusion 2.0 supports both a 5 V addressable LED strip header (up to 300 LEDs) and a standard RGB LED strip header, managed via Gigabyte's APP Center software suite. Smart Fan 5 provides multi-zone thermal control across one CPU fan header and two system fan headers, with hybrid PWM/Voltage mode support and FAN STOP capability. The AMI UEFI BIOS (256 Mbit flash) supports Q-Flash Plus, enabling BIOS updates without a CPU, memory, or GPU installed — a practical advantage during platform upgrades. Anti-sulfur resistors and enhanced ESD/surge protection ICs add long-term durability. Verified Specifications: - Chipset: AMD B550 - Socket: AM4 (3rd Gen AMD Ryzen / Ryzen with Radeon Graphics) - Form Factor: Micro ATX, 24.4 cm x 20.5 cm - Memory: 2 x DDR4 DIMM, up to 64 GB, DDR4-2133 to DDR4-5000 (O.C.), XMP, ECC supported - PCIe Slots: 1 x PCIe 4.0 x16 (CPU), 2 x PCIe 3.0 x1 (Chipset) - Storage: 1 x M.2 (PCIe 4.0/3.0 x4, 2242/2260/2280), 4 x SATA 6 Gb/s (RAID 0/1/10) - Display: D-Sub, DVI-D, HDMI 2.1 (4K@60 Hz, HDCP 2.3, HDR) - Audio: Realtek ALC887, 7.1-channel HD Audio - LAN: Realtek GbE (1000/100 Mbit) - USB (rear): 4 x USB 3.2 Gen 1, 2 x USB 2.0 - BIOS: AMI UEFI, Q-Flash Plus - RGB: RGB Fusion 2.0 (ARGB + RGB headers) - Warranty: 3 Years