ASUS Prime series is expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features. This platform delivers the power and connectivity that advanced AI PC applications demand.

Tune It Your Way

Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work - maximizing your productivity.

Cool to the Core

Prime B550 series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.

VRM Heatsinks and Thermal Pads

The VRM heatsinks with underneath thermal pads improve heat transfer from the MOSFETs and chokes for better cooling performance.

Build on a Solid Foundation

Prime B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options.

PCIe 4.0 M.2 (up to 64 Gbps) Achieve speed with onboard M.2

PCIe 4.0 M.2 Slot supports up to 22110 and provide NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on AMD Ryzen™ 5000 Series/ 3000 Series Processors.

Little Things Make a Big Difference

Prime B550 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive RGB lighting controls that let you customize your system to create a uniquely personal look.

Outstanding Audio Combined onboard features deliver elevated audio

Intelligent design and premium hardware create audio quality unlike anything you've ever experienced.

• Ryzen 3
• Ryzen 5

• DIMM
• UDIMM

• 2133 MHz
• 2400 MHz
• 2667 MHz
• 2800 MHz
• 3000 MHz
• 3200 MHz
• 3333 MHz
• 3466 MHz
• 3866 MHz
• 3600 MHz
• 3733 MHz
• 4000 MHz
• 4133 MHz
• 4466 MHz
• 4600 MHz
• 4400 MHz
• 4800 MHz
• 4266 MHz
• 4333 MHz
• 4866 MHz

• 0
• 10
• 1

• PCI Express 4.0
• PCI Express 3.0

• PRIME B550-PLUS AC-HES Desktop Motherboard
• 2 x SATA 6Gb/s cables
• 1 x ASUS Wi-Fi moving antennas
• 1 x I/O Shield
• 1 x M.2 SSD screw package
• 1 x Support DVD
• 1 x User manual

• Processor Support: AMD AM4 Socket for Ryzen 5000/5000G/4000G/3000 Series processors.
• Memory: 4 x DIMM, Max. 128GB, DDR4 4866(OC) MHz.
• Connectivity: Wi-Fi 5 (802.11ac), 1 Gb Ethernet, Realtek audio.
• Storage & Expansion: Dual M.2 slots (PCIe 4.0 x4 & PCIe 3.0 x4), PCIe 4.0 x16 slot.
• USB: Rear USB 3.2 Gen 2 (Type-A and Type-C) and front header support.
• Cooling: VRM and PCH heatsinks with hybrid fan headers.
• Form Factor: ATX (30.5 cm x 24.4 cm).