- AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ Processors
- Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A and Type-C
- Comprehensive cooling: VRM heatsinks, PCH heatsink, and Fan Xpert 4
- Aura Sync RGB: Onboard addressable Gen 2 header for RGB LED strips, easily synced with Aura Sync-capable hardware
ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation 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.
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 Heatsink and Thermal Pads
Two massive 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 64Gbps PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on the 3rd Generation AMD Ryzen platform.
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.
Combined onboard features deliver elevated audio
Intelligent design and premium hardware create audio quality unlike anything you've ever experienced.
Separates analog/digital signal domains, significantly reducing multi-lateral interference.
Separate Layer for Left and Right Tracks
Ensures minimal crosstalk between audio paths.
Premium Japanese Capacitors
Premium parts provide an immersive sound signature, with exceptional fidelity.
Product Type: Desktop Motherboard
Processor & Chipset
Chipset Manufacturer: AMD
Chipset Model: B550
Total Processor Supported: 1
Processor Socket: Socket AM4
Processor Supported: Ryzen 5
Processor Supported: Ryzen 5 Pro
Processor Supported: Ryzen 7
Processor Supported: Ryzen 7 PRO
Processor Supported: Ryzen 9 PRO
Processor Supported: Ryzen 3
Processor Supported: Ryzen 9
Number of Memory Slots: 4
Memory Form Factor: DIMM
Memory Form Factor: UDIMM
Maximum Memory Supported: 128 GB
Memory Technology: DDR4 SDRAM
Memory Speed Supported: 2133 MHz
Memory Speed Supported: 2400 MHz
Memory Speed Supported: 2800 MHz
Memory Speed Supported: 3000 MHz
Memory Speed Supported: 3600 MHz
Memory Speed Supported: 3733 MHz
Memory Speed Supported: 3866 MHz
Memory Speed Supported: 4400 MHz
Memory Speed Supported: 4466 MHz
Memory Speed Supported: 4800 MHz
Memory Speed Supported: 2667 MHz
Memory Speed Supported: 3200 MHz
Memory Speed Supported: 3333 MHz
Memory Speed Supported: 3466 MHz
Memory Speed Supported: 4000 MHz
Memory Speed Supported: 4133 MHz
Memory Speed Supported: 4266 MHz
Memory Speed Supported: 4600 MHz
Controller Type: Serial ATA/600
RAID Supported: Yes
RAID Levels: 0
RAID Levels: 1
RAID Levels: 10
Onboard Video: CPU Dependent Video
Audio Channels: 7.1
Network & Communication
Gigabit Ethernet: Yes
Number of Total Expansion Slots: 5
Total Number of PCI Express Slots: 5
Number of PCI Express x1 Slots: 3
Number of PCI Express x16 Slots: 2
Total Number of USB Ports: 8
Number of USB 2.0 Ports: 2
Number of USB 3.2 Ports: 6
Number of Network (RJ-45) Ports: 1
Number of SATA Interfaces: 6
Number of M.2 Interfaces: 2
Total Number of Onboard USB Ports: 6
Number of Onboard USB 2.0 Ports: 4
Number of Onboard USB 3.2 Ports: 2
Onboard S/PDIF Header: Yes
Form Factor: ATX