PRIME B550M‑K DDR4 Motherboard – ASUS AM4 Board

The PRIME B550M‑K DDR4 motherboard is a reliable and flexible foundation for AMD AM4 systems with Ryzen™ processors. It supports AMD Ryzen™ 5000 Series, 4000 G‑Series, and 3000 Series desktop CPUs. Therefore, it offers responsive performance for daily computing, creative tasks, and mainstream gaming.

Efficient DDR4 Memory and System Core

This ASUS B550M‑K board supports up to four DDR4 DIMM slots with dual‑channel memory up to 4800 MT/s (OC) using DOCP/XMP tuning. Moreover, Dual‑Channel architecture improves multitasking responsiveness for everyday workloads. As a result, memory‑intensive applications run more smoothly.

Flexible Expansion and Storage

Furthermore, the PRIME B550M‑K DDR4 motherboard includes one PCIe 4.0 x16 slot for discrete graphics and two PCIe 3.0 x1 slots for expansion cards. It also offers two M.2 slots — one PCIe 4.0 x4 and one PCIe 3.0 x4 — for ultra‑fast NVMe SSD storage. Therefore, boot times and data transfer speeds are significantly improved.

Connectivity and Display Support

This board integrates Realtek 1 Gb Ethernet for stable wired networking. Meanwhile, HDMI 2.1, DVI‑D, and VGA outputs provide flexible display options when paired with Ryzen CPUs with integrated graphics. Additionally, multiple USB 3.2 Gen1 and Gen2 Type‑A ports support high‑speed peripherals.

Built‑In Protection and Cooling

ASUS implements 5X Protection III for hardware safeguards and Fan Xpert 2+ for intelligent cooling control. Moreover, a PCH heatsink helps maintain stable temperatures under load.

• • SPECIFICATIONS
    Manufacturer: ASUS
    Model: PRIME B550M‑K DDR4 
    Form Factor: micro‑ATX (24.4 × 24.4 cm)
    CPU Socket: AMD AM4
    Supported CPUs: AMD Ryzen™ 5000 Series / Ryzen™ 4000 G‑Series / Ryzen™ 3000 Series
    Chipset: AMD B550
    Memory: 4 × DDR4 DIMM, Dual‑Channel, up to 128 GB; up to 4800 MT/s (OC)
    Expansion Slots: 1 × PCIe 4.0 x16, 2 × PCIe 3.0 x1
    Storage: 1 × M.2 PCIe 4.0 x4 & 1 × M.2 PCIe 3.0 x4, 4 × SATA 6 Gb/s
    Networking: Realtek RTL8111H 1 Gb Ethernet
    Audio: Realtek ALC887/897 7.1‑channel HD Audio Codec
    Display Outputs: HDMI 2.1 (4K@60 Hz), DVI‑D, VGA
    USB Ports: USB 3.2 Gen2 Type‑A, USB 3.2 Gen1, USB 2.0
    BIOS: UEFI with EZ Flash and ASUS features
    Protection & Cooling: 5X Protection III, Fan Xpert 2+