Gigabyte B550M H ARGB Socket AM4 DDR4 Micro ATX Motherboard

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AMD B550 · AM4 · DDR4 · Micro-ATX

GIGABYTE B550M H ARGB (Rev. 1.0) Motherboard

A compact AMD AM4 motherboard for compatible Ryzen desktop builds, with DDR4 dual-channel memory, an M.2 storage connector, four SATA ports, Gigabit Ethernet and addressable RGB lighting headers.

Its Q-Flash Plus feature allows supported BIOS updates using the dedicated button and USB process described by GIGABYTE, without requiring a supported CPU or memory installed.

Platform and memory

• AMD Socket AM4 with AMD B550 chipset.
• Supports selected AMD Ryzen 5000, Ryzen 5000 G-Series, Ryzen 4000 G-Series, Ryzen 3000 and Ryzen 3000 G-Series processors. Check GIGABYTE’s CPU support list and required BIOS version for the exact CPU.
• Two DDR4 DIMM slots with dual-channel memory architecture; supports ECC and non-ECC unbuffered memory according to the CPU and memory configuration.

Expansion and storage

• One full-length PCI Express x16 slot. PCIe generation depends on the installed CPU: supported Ryzen 5000/3000 processors can provide PCIe 4.0, while supported G-Series processors use PCIe 3.0.
• One PCIe 3.0 x1 expansion slot.
• One M.2 Socket 3 connector, M-key, for 2280 SSDs. PCIe mode and generation depend on the installed processor; the slot also supports SATA-mode M.2 devices.
• Four SATA 6Gb/s connectors.

Connectivity, cooling and lighting

• Rear display outputs: HDMI and DisplayPort; actual graphics output depends on a processor with integrated graphics.
• Realtek Gigabit Ethernet LAN.
• Rear I/O includes USB 3.2 Gen 1, USB 2.0, PS/2, Q-Flash Plus button and three audio jacks.
• Three addressable RGB Gen2 headers and one RGB LED strip header.
• Smart Fan 6 supports fan control using multiple temperature sources and compatible PWM/DC fans.

Technical specifications

Frequently asked questions

Does this board support DDR5?

No. The B550M H ARGB uses DDR4 memory only.

Will every Ryzen AM4 processor work?

No. Check GIGABYTE’s CPU support list and BIOS requirements for the exact processor model before purchase.

Does it support PCIe 4.0?

The board’s PCIe 4.0 support is CPU-dependent. GIGABYTE specifies PCIe 4.0 for supported Ryzen 5000/3000 CPUs, while supported G-Series processors may operate at PCIe 3.0.

Where can I verify the specifications?

See the official GIGABYTE B550M H ARGB Rev. 1.0 page and official specifications.