ASUS Prime B450M-K DDR4 AMD Motherboard

The ASUS Prime B450M-K is a Micro-ATX motherboard built on the AMD B450 chipset, designed for builders who want a reliable and feature-complete foundation for AMD Ryzen systems without unnecessary complexity. Measuring 8.9 × 8.7 inches (22.6 × 22.1 cm), it fits comfortably in compact and mid-tower chassis alike. The board uses the AMD AM4 socket and is compatible with AMD Ryzen 1st Generation, 2nd Generation, and Ryzen processors with Radeon Vega integrated graphics. Memory support extends to two DIMM slots accommodating up to 32GB of unbuffered DDR4 in dual-channel configuration, with rated speeds from 2133 MHz up to 3200 MHz (overclocked). ECC memory support is processor-dependent. Connectivity is a strong suit. The rear I/O panel carries two USB 3.1 Gen 2 Type-A ports (10 Gbps), four USB 3.1 Gen 1 ports (5 Gbps), PS/2 keyboard and mouse ports, DVI-D and D-Sub video outputs (both supporting up to 1920×1200 @ 60 Hz via integrated Radeon Vega graphics), a Gigabit LAN port (Realtek RTL8111H with ASUS LAN Guard), and three audio jacks. Internally, a 19-pin USB 3.1 Gen 1 header adds two more Gen 1 ports for the front panel, and two USB 2.0 headers support four additional USB 2.0 ports. Storage is handled by four SATA 6 Gb/s ports with RAID 0, 1, and 10 support, plus one M.2 Socket 3 (M-key, 2242/2260/2280) capable of both SATA and PCIe 3.0 x4 NVMe drives — the latter delivering up to 32 Gbps transfer bandwidth. The primary PCIe x16 slot runs at full x16 electrical bandwidth with Ryzen 1st and 2nd Gen processors and at x8 with Ryzen Vega APUs; two additional PCIe 2.0 x1 slots are provided for expansion cards. Audio is delivered by a Realtek ALC887 8-channel HD codec, supported by dedicated PCB audio layers, audio shielding for reduced interference, LED-illuminated audio trace paths, and premium Japanese audio capacitors for cleaner signal fidelity. The UEFI AMI BIOS (128 Mb Flash ROM, SM BIOS 3.1, ACPI 6.1) includes ASUS EZ Flash 3, CrashFree BIOS 3, Q-Fan Control with automatic full-speed trigger at 75°C, and an Advanced mode with built-in search. ASUS 5X Protection III safeguards include SafeSlot Core (reinforced PCIe slot), LANGuard (surge and lightning protection), Overvoltage Protection, Stainless-Steel Back I/O, and a 6-phase DIGI+ VRM. A fanless heatsink design keeps thermals quiet. The board ships with a user manual, I/O shield, two SATA 6 Gb/s cables, one M.2 anchor screw, and a support DVD. ASUS provides a 3-year warranty on this product. Verifiable Specifications: - Socket: AMD AM4 - Chipset: AMD B450 - Form Factor: Micro-ATX, 22.6 × 22.1 cm - Memory: 2× DIMM, max 32GB DDR4 (2133–3200 MHz O.C.), dual-channel, ECC varies by CPU - Storage: 4× SATA 6 Gb/s (RAID 0/1/10); 1× M.2 (PCIe 3.0 x4 / SATA, 2242–2280) - USB: 2× USB 3.1 Gen 2 (rear); 4× USB 3.1 Gen 1 (rear); 2× USB 3.1 Gen 1 (header); 4× USB 2.0 (headers) - Video Out: DVI-D + D-Sub (max 1920×1200 @ 60 Hz, APU required) - LAN: Realtek RTL8111H Gigabit - Audio: Realtek ALC887 8-channel HD - BIOS: 128 Mb Flash ROM, UEFI AMI - Warranty: 3 Years