GIGABYTE B550M-K AMD B550 Micro-ATX Motherboard

The GIGABYTE B550M‑K motherboard is a dependable choice for mainstream AMD AM4 systems that require essential performance and modern connectivity. Built on the AMD B550 chipset, this Micro‑ATX board supports a broad range of Ryzen 5000, 4000 G‑Series, and 3000 Series processors, delivering solid performance for everyday computing, gaming, and productivity tasks.

Memory and Expansion for Mainstream Use

Featuring four DDR4 DIMM slots supporting up to 128 GB of memory in dual‑channel mode, the board ensures responsive multitasking and system performance. The primary PCIe 4.0 x16 slot delivers the bandwidth needed for current generation graphics cards, while additional PCIe slots allow flexible expansion.

Dual M.2 Storage and Connectivity

The GIGABYTE B550M‑K includes dual M.2 connectors for NVMe SSDs, supporting both PCIe and SATA modes to boost storage performance. Standard Gigabit LAN and a range of USB ports complement the board’s connectivity, and both HDMI and DisplayPort outputs support multi‑display setups when used with compatible Ryzen CPUs that include integrated graphics.

This motherboard’s compact Micro‑ATX design makes it ideal for smaller builds while still delivering essential features and reliable performance.

• SPECIFICATIONS
  General
• Chipset: AMD B550
• CPU Support: AMD Ryzen™ 5000 Series / 5000 G‑Series / 4000 G‑Series / 3000 Series / 3000 G‑Series Processors (AM4)
• Socket: AM4
• Form Factor: Micro‑ATX (24.4 × 24.4 cm)
• Memory
• Memory Type: DDR4 UDIMM
• DIMM Slots: 4
• Maximum Memory: 128 GB
• Supported Speeds: DDR4‑2133 to 4733 MHz (OC)
• Dual‑Channel Architecture
• Expansion & Storage
• PCIe 4.0 x16 Slot (Primary)
• PCIe 3.0 x1 Slot
• M.2 Slots: 2 × M.2 Socket 3 (PCIe 4.0/3.0 x4 & PCIe 3.0 x2 support)
• SATA III Ports: 4 × 6 Gb/s
• RAID Support: RAID 0/1/10 (SATA)
• Networking
• LAN: Realtek® Gigabit Ethernet
• Rear I/O
• HDMI 2.1 Display Output (up to 4K @60 Hz)
• DisplayPort 1.4 Output (up to 5120×2880 @60 Hz)
• USB 3.2 Gen 1 Ports
• USB 2.0 Ports
• PS/2 Combo Port
• Audio Jacks (Realtek High‑Definition Audio Codec)