GIGABYTE B550M Aorus Pro DDR4 AMD Motherboard

The Gigabyte B550M Aorus Pro DDR4 is a Micro ATX motherboard built on the AMD B550 chipset for Socket AM4, designed to support 3rd Generation AMD Ryzen processors as well as newer AMD Ryzen processors with integrated Radeon Graphics. At 24.4 cm x 24.4 cm, it slots into compact mid-tower and small-form-factor cases without sacrificing expansion capability. Power delivery centres on a 10+3 phase pure digital VRM with Low RDS MOSFETs, fed by a standard 8-pin ATX 12V connector alongside the 24-pin main power header. This configuration supplies stable, precise voltage to the CPU under sustained workloads. Cooling the VRM circuitry are enlarged surface heatsinks designed to dissipate heat passively, while two M.2 Thermal Guards protect NVMe drives from throttling during heavy I/O. Memory support spans four DDR4 DIMM slots in a dual-channel configuration, accepting up to 128 GB total (32 GB per slot). Native speeds reach DDR4-3200/2933/2667/2400/2133 MHz with 3rd Gen Ryzen processors, and XMP profiles allow overclocking to DDR4-4000(O.C.) and beyond depending on the CPU installed. ECC Unbuffered DIMMs are also supported for workstation use cases. Storage is handled by two M.2 connectors: the CPU-connected M2A slot supports PCIe 4.0 x4 NVMe SSDs (types 2242/2260/2280/22110) with 3rd Gen Ryzen, while the chipset-connected M2B slot supports PCIe 3.0 x4 NVMe SSDs (types 2242/2260/2280). Four SATA 6Gb/s ports add bulk storage with RAID 0, 1, and 10 support. Connectivity on the rear I/O panel includes one USB 3.2 Gen 2 Type-C port, one USB 3.2 Gen 2 Type-A port (red), four USB 3.2 Gen 1 Type-A ports, four USB 2.0 ports, one HDMI 2.1 output (4096x2160 @ 60 Hz, HDCP 2.3, HDR), one DisplayPort 1.4 output (5120x2880 @ 60 Hz, HDCP 2.3, HDR), a Realtek GbE RJ-45 LAN port (1000/100 Mbit), an optical S/PDIF out, and five audio jacks driven by a Realtek ALC1200 codec supporting up to 7.1-channel High Definition Audio. RGB Fusion 2.0 controls two addressable LED headers, two standard RGB LED headers, and one CPU cooler LED header, enabling synchronised lighting across compatible components. Smart Fan 5 manages one CPU fan header, one water-cooling CPU fan header, and three system fan headers with per-header FAN STOP support. The Q-Flash Plus button on the rear panel allows BIOS updates without installing a CPU, memory, or graphics card — a practical convenience during initial builds. Key Specifications: - Chipset: AMD B550 - Socket: AM4 (3rd Gen AMD Ryzen; AMD Ryzen with Radeon Graphics) - Form Factor: Micro ATX, 24.4 cm x 24.4 cm - Memory: 4x DDR4 DIMM, up to 128 GB, dual channel, XMP, ECC Unbuffered support - Primary M.2 (CPU): PCIe 4.0 x4 / SATA, types 2242/2260/2280/22110 - Secondary M.2 (Chipset): PCIe 3.0 x4 / SATA, types 2242/2260/2280 - SATA: 4 x 6Gb/s with RAID 0/1/10 - PCIe Slots: 1x PCIe 4.0 x16 (CPU), 1x PCIe 3.0 x4 (Chipset), 1x PCIe 3.0 x1 (Chipset) - USB (Rear): 1x USB 3.2 Gen 2 Type-C, 1x USB 3.2 Gen 2 Type-A, 4x USB 3.2 Gen 1, 4x USB 2.0 - Display Output: HDMI 2.1, DisplayPort 1.4 (requires APU) - Audio: Realtek ALC1200, 7.1-channel HD Audio, S/PDIF Out - LAN: Realtek GbE 1000/100 Mbit - VRM: 10+3 phase digital - BIOS: AMI UEFI, 256 Mbit flash, Q-Flash, Q-Flash Plus - Warranty: 3 Years