Asus Prime B550M-K ARGB DDR4 AMD Motherboard

The ASUS Prime B550M-K ARGB is a micro-ATX motherboard built on the AMD B550 chipset, designed for the AMD AM4 socket. It supports AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series, and 3000 Series desktop processors, making it a versatile foundation for a wide range of AM4 builds — from everyday productivity to enthusiast DIY systems. Storage flexibility is a core strength of this board. It features two M.2 slots (Key M): the primary M.2_1 slot supports PCIe 4.0 x4 mode (up to 64 Gbps theoretical) when paired with Ryzen 5000 or 3000 Series processors, while the secondary M.2_2 slot operates via PCIe 3.0 x4 through the B550 chipset. Four SATA 6 Gb/s ports provide additional storage expansion, and AMD RAIDXpert2 technology enables RAID 0, 1, and 10 configurations across both PCIe and SATA storage. For memory, the board includes two DIMM slots supporting up to 64 GB of unbuffered DDR4 in a dual-channel configuration, with native speeds from 2133 MHz up to 3200 MHz and overclocked (OC) profiles reaching up to 5100 MHz. Connectivity on the rear I/O includes four USB 3.2 Gen 1 (5 Gbps) Type-A ports, two USB 2.0 Type-A ports, a DisplayPort 1.4 (supporting up to 4K@60Hz), an HDMI 2.1 port (4K@60Hz), a Realtek 1 Gb Ethernet port, three audio jacks, and a PS/2 combo port. Front panel headers add a USB 3.2 Gen 1 Type-C connector, two additional USB 3.2 Gen 1 ports via header, and four USB 2.0 ports via two headers. The board features three onboard Addressable Gen 2 (ARGB) headers for connecting compatible RGB LED strips and accessories, all manageable through ASUS Armoury Crate with Aura Sync support. Audio is handled by a Realtek HD Audio CODEC supporting 7.1 surround sound output (requires an HD audio front-panel chassis), 24-bit/192 kHz playback, audio shielding, premium capacitors, and dedicated audio PCB layers. ASUS 5X Protection III safeguards include DIGI+ VRM digital power control, LANGuard surge protection, SafeSlot Core reinforced PCIe slot, and overvoltage protection. Cooling management is handled through a 4-pin CPU fan header, two 4-pin chassis fan headers, and Fan Xpert 2+ software with multi-sensor thermal mapping. Verified Specifications: - Form Factor: micro-ATX, 9.6 in x 8.7 in (24.4 cm x 22.1 cm) - Socket: AMD AM4 - Chipset: AMD B550 - Memory: 2x DIMM, DDR4, max 64 GB, dual-channel, up to 5100 MHz (OC) - PCIe: 1x PCIe 4.0 x16 (Ryzen 5000/3000); 1x PCIe 3.0 x16 (G-Series); 1x PCIe 3.0 x1 - Storage: 2x M.2 (Key M), 4x SATA 6 Gb/s - USB Rear: 4x USB 3.2 Gen 1, 2x USB 2.0 - Display Out: 1x DisplayPort 1.4, 1x HDMI 2.1 - Ethernet: Realtek 1 Gb - Audio: Realtek 7.1 HD, 24-bit/192 kHz - BIOS: 128 Mb Flash ROM, UEFI AMI BIOS - ARGB Headers: 3x Addressable Gen 2 - Warranty: 3 Years - OS Support: Windows 11, Windows 10 64-bit