ASROCK B450M Pro4 DDR4 AMD Motherboard

The ASRock B450M Pro4 is a Micro ATX motherboard built on the AMD B450 chipset (AMD Promontory B450) and the AMD AM4 socket, making it compatible with AMD Ryzen series processors including Matisse, Pinnacle Ridge, Summit Ridge, Picasso, and Raven Ridge generations, as well as AMD Athlon series APUs. At 9.6 x 9.6 inches (24.4 x 24.4 cm), the board fits standard Micro ATX cases while delivering an expansive feature set for mainstream and enthusiast AMD builds. Memory support spans four DDR4 DIMM slots in dual-channel configuration, accommodating up to 64 GB of system memory (note: 32 GB installed is required to access the 16 GB maximum shared GPU memory). Supported speeds vary by CPU generation, reaching DDR4 3200 with Matisse and certain other Ryzen families, with ECC and non-ECC un-buffered modules supported on select platforms. Storage is handled by four SATA3 6 Gb/s connectors with RAID 0, 1, and 10 support, an Ultra M.2 socket (M2_1) supporting PCIe Gen3 x4 at up to 32 Gb/s with compatible Ryzen CPUs, and a second M.2 socket (M2_2) for SATA3 6 Gb/s modules. Note that M2_2 and SATA3_3 share bandwidth and cannot be used simultaneously. Connectivity on the rear I/O includes one USB 3.1 Gen2 Type-A port and one USB 3.1 Gen2 Type-C port (both at 10 Gb/s), four USB 3.1 Gen1 ports, two USB 2.0 ports, a PS/2 port, Gigabit LAN (Realtek RTL8111H), and three video outputs — D-Sub, DVI-D, and HDMI — supporting up to 4K resolution via HDMI with compatible APUs. Triple-monitor output is supported when using a processor with integrated graphics. Audio is delivered by a Realtek ALC892 codec providing 7.1-channel HD audio with ELNA audio capacitors for reduced noise. Power delivery relies on a Hybrid Digi Power design with a Premium 42A power choke, and the PCB uses 2 oz copper inner layers on a High Density Glass Fabric substrate. Solid capacitors are used throughout for stability and longevity. The board includes RGB and Addressable LED headers, ASRock Polychrome SYNC software, Full Spike Protection across all USB, audio, and LAN ports, and a 128 Mb AMI UEFI BIOS with multilingual GUI. Software utilities include A-Tuning, XFast LAN, and Easy RAID Installer. The board carries FCC and CE certifications and is ErP/EuP ready. Verifiable Specifications: - Form Factor: Micro ATX, 9.6 x 9.6 in (24.4 x 24.4 cm) - Socket: AMD AM4 - Chipset: AMD Promontory B450 - Memory: 4x DDR4 DIMM, dual-channel, max 64 GB - Storage: 4x SATA3 6 Gb/s, 1x Ultra M.2 (PCIe Gen3 x4, up to 32 Gb/s), 1x M.2 SATA3 - USB: 1x USB 3.1 Gen2 Type-A, 1x USB 3.1 Gen2 Type-C, 4x USB 3.1 Gen1, 2x USB 2.0 (rear) - Video Out: D-Sub (1920x1200@60Hz), DVI-D (1920x1200@60Hz), HDMI (up to 4K@30Hz) - Audio: Realtek ALC892, 7.1 CH HD, ELNA audio caps - LAN: Realtek RTL8111H Gigabit Ethernet - PCIe: 1x PCIe 3.0 x16, 1x PCIe 2.0 x16 (x4 mode), 1x PCIe 2.0 x1 - BIOS: 128 Mb AMI UEFI - Warranty: 3 Years - Certifications: FCC, CE, ErP/EuP ready