ASROCK B450M Steel Legend DDR4 AMD Motherboard

The ASRock B450M Steel Legend is a Micro ATX motherboard designed for AMD AM4 socket processors, built around the AMD Promontory B450 chipset. It accommodates the full range of AMD Ryzen desktop CPUs across multiple generations — including Matisse (Ryzen 3000), Pinnacle Ridge (Ryzen 2000), Summit Ridge (Ryzen 1000), Raven Ridge, and Picasso APUs — making it a versatile foundation for both new builds and platform upgrades. Memory support spans four DDR4 DIMM slots in dual-channel configuration, with a maximum capacity of 64 GB. Supported speeds reach DDR4 3533 (OC) with compatible Pinnacle Ridge CPUs, and DDR4 3200 (OC) with Matisse CPUs, alongside native JEDEC speeds down to 2133 MHz. DIMM slots feature 15μ gold contacts for reliable long-term connectivity. Storage is handled by four SATA3 6 Gb/s ports with RAID 0, RAID 1, and RAID 10 support, one Ultra M.2 socket (M2_1) supporting PCIe Gen3 x4 NVMe modules up to 2280 form factor at up to 32 Gb/s, and one M.2 socket (M2_2) supporting SATA3 modules. Note that M2_2 shares lanes with SATA3_3; enabling one disables the other. Expansion slots include one PCIe 3.0 x16 slot (operating at x16 mode with Matisse, Summit Ridge, and Pinnacle Ridge CPUs), one PCIe 2.0 x16 slot (x4 mode), and one PCIe 2.0 x1 slot, with AMD Quad CrossFireX support. Connectivity on the rear I/O panel includes one USB 3.1 Gen2 Type-A 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, one HDMI 1.4 output (up to 4K@24Hz), one DisplayPort 1.2 output (up to 4K@60Hz), one RJ-45 Gigabit LAN port (Realtek RTL8111H), optical S/PDIF output, and HD audio jacks with gold plating. Internal headers add two USB 2.0 headers (four ports) and one USB 3.1 Gen1 header. Audio is provided by a Realtek ALC892 codec delivering 7.1-channel HD audio with content protection, Nichicon Fine Gold Series audio capacitors, PCB isolation shielding, and individual PCB layers for left and right audio channels. The board supports ASRock Polychrome SYNC RGB lighting via one 12V RGB header (up to 36 W) and one addressable 5V LED header (up to 15 W). Power delivery uses a 6-phase digital design with Premium 60A power chokes and Nichicon 12K Black Caps (100% Japan-made conductive polymer capacitors), backed by a 2oz copper PCB and XXL aluminum alloy heatsink. Verified Specifications: - Socket: AMD AM4 - Chipset: AMD B450 (Promontory) - Form Factor: Micro ATX — 9.6 in × 9.6 in (244 mm × 244 mm) - Memory: 4× DDR4 DIMM, max 64 GB, up to DDR4 3533 (OC) - Storage: 4× SATA3 6 Gb/s; 1× M.2 PCIe Gen3 x4 (NVMe); 1× M.2 SATA3 - Rear USB: 1× USB 3.1 Gen2 Type-A, 1× USB 3.1 Gen2 Type-C, 4× USB 3.1 Gen1, 2× USB 2.0 - Video Out: HDMI 1.4, DisplayPort 1.2 - LAN: Realtek RTL8111H Gigabit Ethernet - Audio: Realtek ALC892, 7.1 CH HD - BIOS: 128 Mb AMI UEFI - Certifications: FCC, CE, ErP/EuP ready