COLAMCO

Asus Prime B550M-A/CSM Desktop Motherboard - AMD Chipset - Socket AM4

$109.99
$109.22 SAVE $0.77
None availableas of 09/29/2026

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Compliance, certifications and origin

  • RoHS
  • Origin: China
Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

About the Asus Prime B550M-A/CSM

AMD 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.

Technical specifications

Technical Specifications of the Asus Prime B550M-A/CSM

General Information

General Information specifications
Manufacturer ASUS Computer International
Manufacturer Part Number PRIME B550M-A/CSM
Manufacturer Website Address http://usa.asus.com
Brand Name Asus
Product Line Prime
Product Model B550M-A/CSM
Product Name Prime B550M-A/CSM Desktop Motherboard
Product Type Desktop Motherboard

Processor & Chipset

Processor & Chipset specifications
Chipset Manufacturer AMD
Chipset Model B550
Total Processor Supported 1
Processor Socket Socket AM4
Processor Supported Ryzen 7Ryzen 9 PRORyzen 9Ryzen 5Ryzen 7 PRORyzen 3Ryzen 5 Pro

Memory

Memory specifications
Number of Memory Slots 4
Memory Form Factor UDIMMDIMM
Maximum Memory 128 GB
Memory Technology DDR4 SDRAM
Memory Speed Supported 2667 MHz2400 MHz3200 MHz2133 MHz3000 MHz2800 MHz4133 MHz4400 MHz3466 MHz4466 MHz4000 MHz4600 MHz3600 MHz3733 MHz3866 MHz4800 MHz4266 MHz3333 MHz

I/O Controller

I/O Controller specifications
Controller Type Serial ATA/600
RAID Supported Yes
RAID Levels 1010

Video

Video specifications
Onboard Video CPU Dependent Video

Audio

Audio specifications
Audio Channels 7.1

Network & Communication

Network & Communication specifications
Gigabit Ethernet Yes

I/O Expansions

I/O Expansions specifications
Total Number of Expansion Slots 3
Total Number of PCI Express Slots 3
Number of PCI Express x1 Slots 2
Number of PCI Express x16 Slots 1

Interfaces/Ports

Interfaces/Ports specifications
Total Number of USB Ports 6
Number of USB 3.2 Ports 6
VGA Yes
HDMI Yes
DVI Yes
Number of Network (RJ-45) Ports 1

Onboard Interfaces

Onboard Interfaces specifications
Number of SATA Interfaces 4
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

Physical Characteristics

Physical Characteristics specifications
Form Factor Micro ATX
Width 9.6"
Depth 9.6"

Miscellaneous

Miscellaneous specifications
Green Compliant Yes
Country of Origin China
Environmental Compliance Restriction of Hazardous Substances (RoHS)

Warranty

Warranty specifications
Limited Warranty 3 Year

Ratings and reviews

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Shipping and returns

Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Need to send it back? Start a return online with a Request RMA and our team will take care of you. Keep the original packaging. Items must be returned in the condition received.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.