Description

ManufacturerASUS Computer International
Manufacturer Part NumberPRIME B550M-A/CSM
Manufacturer Website Addresshttp://www.asus.com
Brand NameAsus
Product LinePrime
Product ModelB550M-A/CSM
Product NamePrime B550M-A/CSM Desktop Motherboard
Marketing InformationAMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB headers support

  • AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ Processors
  • Comprehensive cooling: VRM heatsink, PCH heatsink, and Fan Xpert 2+
  • Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A
  • Aura Sync RGB: Onboard addressable Gen 2 header for RGB LED strips, easily synced with Aura Sync-capable hardware

PRIME
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.

ASUS Corporate Stable Model

ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and 6-month end-of-life notice to allow sufficient lead times for your organization to get ready for product transitions. Each purchase of an ASUS CSM motherboard comes with ASUS Control Center Express – server-grade IT management software.

ASUS Control Center Express

ASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster, simplify IT operations and improve productivity with comprehensive control and user-friendly functions. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs.

Optimize IT endpoint management

Designed to assist IT staff in monitoring and controlling devices within their corporate networks, and facilitate inventory checking in multiple locations remotely

Automate IT maintenance

Allows IT staff to schedule automatic updates of the latest BIOS, software and utilities to specific or all devices at off-peak times, enhancing system stability and IT operational flexibility

Securely manage all of endpoints

Securely manage endpoint configuration, portable storage access and PC software applications by enabling them to create grouping rules on individual devices

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

A VRM heatsink with underneath thermal pad improves 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 the 3rd Generation AMD Ryzen platform.

Product TypeDesktop Motherboard
Processor & Chipset
Chipset ManufacturerAMD
Chipset ModelB550
Total Processor Supported1
Processor SocketSocket AM4
Processor Supported
  • Ryzen 3
  • Ryzen 5
  • Ryzen 5 Pro
  • Ryzen 7
  • Ryzen 7 PRO
  • Ryzen 9
  • Ryzen 9 PRO
Memory
Number of Memory Slots4
Memory Form Factor
  • DIMM
  • UDIMM
Maximum Memory Supported128 GB
Memory TechnologyDDR4 SDRAM
Memory Speed Supported
  • 2133 MHz
  • 2400 MHz
  • 2667 MHz
  • 2800 MHz
  • 3000 MHz
  • 3200 MHz
  • 3333 MHz
  • 3466 MHz
  • 3600 MHz
  • 3733 MHz
  • 3866 MHz
  • 4000 MHz
  • 4133 MHz
  • 4266 MHz
  • 4400 MHz
  • 4466 MHz
  • 4600 MHz
  • 4800 MHz
I/O Controller
Controller TypeSerial ATA/600
RAID SupportedYes
RAID Levels
  • 0
  • 1
  • 10
Video
Onboard VideoCPU Dependent Video
Audio
Audio Channels7.1
Network & Communication
Gigabit EthernetYes
I/O Expansions
Total Number of Expansion Slots3.0
Total Number of PCI Express Slots3
Number of PCI Express x1 Slots2
Number of PCI Express x16 Slots1
Interfaces/Ports
Total Number of USB Ports6
Number of USB 3.2 Ports6
VGAYes
HDMIYes
DVIYes
Number of Network (RJ-45) Ports1
Onboard Interfaces
Number of SATA Interfaces4
Number of M.2 Interfaces2
Total Number of Onboard USB Ports6
Number of Onboard USB 2.0 Ports4
Number of Onboard USB 3.2 Ports2
Onboard S/PDIF HeaderYes
Physical Characteristics
Form FactorMicro ATX
Width9.60″ (243.84 mm)
Depth9.60″ (243.84 mm)
Miscellaneous
Brand CompatibilityAMD
Country of OriginChina
Environmentally FriendlyYes
Environmental ComplianceRestriction of Hazardous Substances (RoHS)
Warranty
Limited Warranty3 Year