GIGABYTE B550 Aorus Pro AC Wifi AM4 DDR4 AMD Motherboard

The Gigabyte B550 Aorus Pro AC is a full-size ATX motherboard built on the AMD B550 chipset for the AM4 platform. It is designed to support 3rd Generation AMD Ryzen processors as well as newer AMD Ryzen processors with Radeon Graphics, making it a capable foundation for a mid-to-high-end desktop build. At the heart of its power delivery is a 12+2 phase digital VRM design utilising 50 A DrMOS components, controlled by a fully digital PWM controller. This configuration is designed to provide stable and consistent voltage to power-hungry Ryzen processors. Thermal management is handled by a Fins-Array heatsink on the VRM area, a direct-touch heatpipe design, and M.2 thermal guards on both M.2 slots to reduce SSD throttling under sustained loads. For memory, the board provides four DDR4 DIMM slots in a dual-channel configuration, supporting up to 128 GB of system memory (32 GB per DIMM). With a compatible 3rd Gen Ryzen processor, DDR4 speeds up to 5200 MHz (O.C.) are supported; with Ryzen APUs the ceiling extends to DDR4 5400 MHz (O.C.). Both ECC and non-ECC unbuffered modules are supported, along with XMP profiles. Storage options are generous: one CPU-connected M.2 slot (M2A_CPU) supports PCIe 4.0 x4 NVMe SSDs with 3rd Gen Ryzen processors, while the chipset-connected M.2 slot (M2B_SB) supports PCIe 3.0 x4 NVMe SSDs. Six SATA 6 Gb/s ports provide additional storage with RAID 0, 1, and 10 support. Connectivity is a strong point. The onboard Intel Wi-Fi 3168 module delivers dual-band 802.11a/b/g/n/ac wireless (up to 433 Mbps) and Bluetooth 4.2, complemented by a Realtek 2.5 GbE wired LAN port. The back panel includes one USB 3.2 Gen 2 Type-C port, two USB 3.2 Gen 2 Type-A ports, three USB 3.2 Gen 1 ports, and six USB 2.0/1.1 ports. A Q-Flash Plus button on the rear I/O enables BIOS updates without a CPU, memory, or GPU installed. Audio is handled by the Realtek ALC1220-VB codec with WIMA FKP2 and Nichicon Fine Gold capacitors, delivering up to 120 dB SNR on the rear output with 2/4/5.1/7.1-channel support and S/PDIF optical out. RGB Fusion 2.0 controls onboard and connected lighting via addressable LED and RGB LED strip headers. Smart Fan 5 manages seven fan/pump headers with individual temperature sensor support. Verifiable Specifications: – Chipset: AMD B550 – Socket: AM4 – Form Factor: ATX, 30.5 cm x 24.4 cm – Memory: 4 x DDR4 DIMM, up to 128 GB, dual-channel, XMP support – PCIe: 1 x PCIe 4.0 x16 (CPU), 1 x PCIe 3.0 x4, 1 x PCIe 3.0 x2, 2 x PCIe x1 – Storage: 2 x M.2 (PCIe 4.0/3.0 x4) with thermal guards, 6 x SATA 6 Gb/s, RAID 0/1/10 – Wireless: Intel Wi-Fi 3168, 802.11ac, Bluetooth 4.2 – LAN: Realtek 2.5 GbE – Audio: Realtek ALC1220-VB, 7.1-channel, 120 dB SNR (rear), S/PDIF out – BIOS: AMI UEFI, 256 Mbit flash, Q-Flash Plus – Warranty: 3 Years