ASUS AM4 PRIME B550M-A M-ATX

ASUS Prime B550M-A Micro ATX Motherboard

The ASUS Prime B550M-A Micro ATX Motherboard is a Micro ATX motherboard based on the AMD B550 chipset and AMD AM4 processor socket. It provides a foundation for compatible processors, with memory, storage, expansion, networking and rear I/O options for a compatible custom PC.

Key Features

• AMD AM4
• AMD B550
• Micro ATX
• 4 x DDR4 DIMM slots, up to 128GB, dual channel
• Realtek 1Gb Ethernet
• Realtek 7.1-channel high definition audio
• 1 x PCIe 4.0 x16 slot
• 1 x PCIe 3.0 x16 slot
• 1 x PCIe 3.0 x1 slot
• 2 x M.2 slots
• 4 x SATA 6Gb/s ports
• 1 x HDMI
• 1 x DVI-D
• 1 x D-Sub
• PCIe 4.0 support
• Aura Sync RGB headers
• ASUS 5X Protection III
• Fan Xpert 2+ cooling controls

Processor and Memory Platform

The AMD AM4 socket and AMD B550 platform support compatible processors.

Memory support is specified as 4 x DDR4 DIMM slots, up to 128GB, dual channel. The final supported speed and capacity depend on the processor, memory kit and BIOS configuration.

Expansion Support

The motherboard provides the following expansion connections for compatible graphics cards and add-in devices:

• 1 x PCIe 4.0 x16 slot
• 1 x PCIe 3.0 x16 slot
• 1 x PCIe 3.0 x1 slot

Storage Connectivity

M.2 and SATA connections provide options for fast solid-state storage and additional compatible drives.

• 2 x M.2 slots
• 4 x SATA 6Gb/s ports

Networking

Realtek 1Gb Ethernet provides wired and, where specified, wireless network connectivity for the completed PC.

Integrated Audio

Realtek 7.1-channel high definition audio provides onboard sound for compatible speakers, headsets and audio equipment.

Rear I/O and Display Connections

Rear USB connectivity includes USB 3.2 Gen 2 Type-A, USB 3.2 Gen 1 and USB 2.0.

Available motherboard display outputs include 1 x HDMI, 1 x DVI-D, 1 x D-Sub and require a processor with compatible integrated graphics.

Additional Motherboard Features

• PCIe 4.0 support
• Aura Sync RGB headers
• ASUS 5X Protection III
• Fan Xpert 2+ cooling controls

Platform Specification

Expansion Slots

Storage Connections

Display Outputs

Package Contents

• Motherboard
• SATA cables
• M.2 screws
• I/O shield
• User documentation

Warranty and Product Information

Please note: Processor, memory, storage and expansion compatibility depend on the exact component model and motherboard BIOS version. Motherboard display outputs require a processor with supported integrated graphics.