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Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX

Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
36 mo.
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
R2,305
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 supportASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen platform. Boasting a robust power ... Read More
Stock 1 Code 118159 Brand ASUS Model 90MB14I0-M0EAYC Warranty 3 Years

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Estimated delivery Friday, October 2
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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

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.

* Lifecycle support for consumer chipsets (eg. Q370, H370, B360,H270,B250) is set at 15 months. Program offerings may vary by region. Please consult your local sales representative for more information.

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 productiv

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.

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.

Audio Shielding

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.

All-around Energy Efficiency

With the Energy Processing Unit (EPU), you'll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode.

Flexible Cooling Controls

Fan Xpert 2+ software provides comprehensive control over system fans. Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.
Flexible Cooling Controls

Precise Digital Power Control

The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.

How to use

Install the ASUS Prime B550M-A/CSM into a compatible micro ATX chassis and fit a supported AM4 processor, cooling solution and DDR4 memory modules (up to 128 GB across four slots). Connect NVMe M.2 SSDs and/or SATA drives to the respective connectors and attach power, front-panel headers and case fans to the onboard connectors. Use the firmware (UEFI) and bundled ASUS utilities to configure storage RAID, tune performance settings and enable Aura Sync RGB lighting if applicable. For business deployments, install and configure ASUS Control Center Express to manage updates, monitor endpoints and apply grouping policies.

Recommendations

For stable operation and optimal cooling, use a compatible CPU cooler for your Ryzen processor, ensure proper case airflow and install the VRM heatsink thermal pads where applicable. Keep BIOS and ASUS Control Center Express updated and schedule off-peak firmware or software updates for enterprise environments to minimize disruption.

Key Highlights
  • Home and office PCs based on AMD Ryzen 3rd Gen processors
  • Compact micro ATX builds requiring multiple storage options (M.2 + SATA)
  • Small business environments needing centralized IT management and lifecycle stability
  • Systems prioritizing high-speed NVMe storage and PCIe 4.0 capability
  • Form factor: Micro ATX
  • Chipset: AMD B550
  • CPU socket: Socket AM4 (3rd Gen Ryzen compatible)
  • Memory: 4 x DDR4 DIMM slots, up to 128 GB
  • M.2: Dual M.2 slots, one supporting PCIe 4.0 (up to 22110, up to ~64 Gbps)
  • SATA: SATA III 6 Gbps ports
  • PCIe: PCIe 4.0 support on compatible lanes; PCIe x1 Gen3 slots: 2
  • Networking: 1 Gb Ethernet (Realtek RTL8111H)
  • Rear I/O: HDMI, D-Sub, DVI, USB 3.2 Gen 2 Type-A
  • Audio: Onboard audio with shielding, separate left/right layers and premium capacitors
  • Brand/Model: ASUS Prime B550M-A/CSM (MPN: 90MB14I0-M0EAYC, EAN: 4718017755535)
Specifications
ATX Power connector (24-pin)
Yes
Audio chip
Realtek ALC887
Audio output channels
7.1 channels
BIOS memory size
256 Mbit
BIOS type
UEFI AMI
Clear CMOS jumper
Yes
Compatible processor series
AMD Ryzen 3000 Series
Component for
PC
CPU fan connector
Yes
Depth
244 mm
DVI-D ports quantity
1
EPS power connector (8-pin)
Yes
Ethernet interface type
Gigabit Ethernet
Ethernet LAN
Yes
Ethernet LAN (RJ-45) ports
1
Front panel audio connector
Yes
Harmonized System (HS) code
84733020
HDMI ports quantity
1
Headphone outputs
1
Height
51 mm
LAN controller
Realtek RTL8111H
Maximum internal memory
128 GB
Memory slots type
DIMM
Microphone in
Yes
Motherboard chipset
AMD B550
Motherboard chipset family
AMD
Motherboard form factor
micro ATX
mSATA ports quantity
0
Number of chassis fan connectors
2
Number of memory slots
4
Number of Parallel ATA connectors
0
Number of SATA connectors
0
Number of SATA II connectors
0
Number of SATA III connectors
4
On-board graphics card
No
PCI Express x1 (Gen 3.x) slots
2
PCI Express x16 (Gen 4.x) slots
1
Processor manufacturer
AMD
Processor socket
Socket AM4
Product colour
Black, Silver
PS/2 ports quantity
1
Supported memory clock speeds
2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600 MHz
Supported memory types
DDR4-SDRAM
Supported storage drive interfaces
M.2, SATA III
Unbuffered memory
Yes
USB 2.0 connectors
2
USB 2.0 ports quantity
0
USB 3.2 Gen 1 (3.1 Gen 1) connectors
1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
4
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity
0
USB 3.2 Gen 2 (3.1 Gen 2) connectors
0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
0
VGA (D-Sub) ports quantity
1
Weight
845 g
Wi-Fi
No
Width
244 mm
Windows operating systems supported
Windows 10 x64

Manual

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Leaflet

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Price history over the last 6 months
Motherboard ASUS Prime B550M-A/CSM AMD B550 Socket AM4 micro ATX
Current
R2,305
Lowest
R1,983
Highest
R2,533
Change 24H
+R169   +8%
Week
+R296   +15%
Month
+R311   +16%

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