ASUS PRIME B550M-A/CSM AM4 Micro-ATX Motherboard

BH #ASPB550MAC • MFR #PRIME B550M-A/CSM
ASUS PRIME B550M-A/CSM AM4 Micro-ATX Motherboard
Key Features
  • Micro-ATX Form Factor
  • AMD B550 Chipset
  • AM4 Socket
  • 4 x Dual-Channel DDR4-4400 (OC)
Enhance your business with an AMD Ryzen computer system using the ASUS PRIME B550M-A/CSM AM4 Micro-ATX Motherboard. Powered by the AMD B550 chipset, this motherboard supports third-generation AMD Ryzen processors with the AM4 socket. Designed to deliver enterprise-class performance in a small form factor, the micro-ATX motherboard takes advantage of the PCIe 4.0's data bandwidth to deliver high performance for demanding tasks such as 3D rendering, video editing, and more. Up to 128GB of dual-channel DDR4 ECC memory, reaching 4400 MHz when overclocked, can be installed across four memory slots. The PRIME B550M-A also features advanced cooling and supports up to two M.2 SSDs and four SATA III storage drives, which can be put into RAID 0, 1, or 10 configurations. Its PCIe 4.0 x16 slot can accommodate a high-end graphics card and two PCIe 3.0 x1 slots are available for compatible expansion cards. Or you can use the AMD CPU's integrated graphics by connecting up to three monitors to the motherboard's HDMI, DVI-D, and VGA ports.
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ASUS B550M-A/CSM Overview

  • 1Description
  • 2High Performance Bandwidth
  • 3Enhanced Cooling
  • 4Storage and Memory
  • 5Enhanced Memory Performance
  • 6Power & Performance
  • 7High-Speed Connectivity
  • 8Audio Features
  • 9Integrated Graphics
  • 10Aura Sync RGB Lighting

Enhance your business with an AMD Ryzen computer system using the ASUS PRIME B550M-A/CSM AM4 Micro-ATX Motherboard. Powered by the AMD B550 chipset, this motherboard supports third-generation AMD Ryzen processors with the AM4 socket. Designed to deliver enterprise-class performance in a small form factor, the micro-ATX motherboard takes advantage of the PCIe 4.0's data bandwidth to deliver high performance for demanding tasks such as 3D rendering, video editing, and more. Up to 128GB of dual-channel DDR4 ECC memory, reaching 4400 MHz when overclocked, can be installed across four memory slots. The PRIME B550M-A also features advanced cooling and supports up to two M.2 SSDs and four SATA III storage drives, which can be put into RAID 0, 1, or 10 configurations. Its PCIe 4.0 x16 slot can accommodate a high-end graphics card and two PCIe 3.0 x1 slots are available for compatible expansion cards. Or you can use the AMD CPU's integrated graphics by connecting up to three monitors to the motherboard's HDMI, DVI-D, and VGA ports.

Connect peripherals such as keyboards and mice to the rear panel's USB 2.0 ports while reserving the USB 3.2 Gen 2 Type-A ports for transferring data from compatible devices at up to 10 Gb/s. Other features include a Gigabit Ethernet port, addressable Gen 2 Aura Sync RGB lighting headers, and a Realtek ALC887 7.1-channel audio system. Windows 10 64-bit is required to take advantage of all the motherboard's features.

High Performance Bandwidth
The ASUS PRIME B550M-A pairs third-generation AMD Ryzen AM4 processors and the high PCIe 4.0 memory bandwidth through the B550 chipset for maximum performance.
Enhanced Cooling
  • VRM Heatsink: The Prime B550M-A features a large voltage-regulator module (VRM) heatsink with thermal pads to quickly transfer heat away from sensitive components. A fan holder is included for additional cooling.
  • Active Chipset Heatsink: A heatsink and fan combination that helps to cool the chipset and avoid speed throttling during sustained data transfers.
  • Hybrid Fan Headers: The motherboard can automatically detect the connected fans and liquid cooling pumps in PWM or voltage mode.
Storage and Memory
  • Two M.2 slots support up to type 22110 NVMe PCIe and SATA SSDs.
  • Four SATA III connectors are available for hard drives and 2.5" SSDs.
  • Supports RAID 0, 1, and 10.
  • Up to 128GB of dual-channel ECC DDR4 4400 (OC) memory can be installed across four slots.
Enhanced Memory Performance
ASUS OptiMem trace layout technology allows memory kits to operate and high frequencies and low voltages to maximize performance.
Power & Performance
The PRIME B550M-A has 8+1 DrMOS power stages that feature high-quality alloy chokes and durable capacitors to provide reliable power critical components such as the CPU.
High-Speed Connectivity
USB 3.2 Gen 2 Type-A ports transfer data at up to 10 Gb/s with compatible devices.
Audio Features
  • Realtek ALC887 7.1-Channel HD Audio.
  • Supports 24-bit / 192 kHz playback.
  • Enhanced audio shielding
  • Automatic jack detection and multi-streaming.
  • LED illuminated audio trace path design.
Integrated Graphics
Take advantage of third-generation AMD Ryzen CPUs that have integrated graphics by connecting monitors to the motherboard's HDMI, DVI-D, and VGA ports.
Aura Sync RGB Lighting
Aura Sync technology allows you to connect, customize, and control lighting equipment such as RGB LEDs and light strips on the onboard RGB headers. You can choose from a variety of lighting presets that include Static, Strobing, and Color Cycle. These presets can be synchronized with Aura-capable peripherals such as keyboards, mice, monitors, and more. The addressable Gen 2 RGB headers can detect the number of LEDs on a compatible device to further tailor the lighting effects.
UPC: 192876755532

ASUS B550M-A/CSM Specs

Key Specs
Chipset
AMD B550
CPU Socket
AM4
Memory Slots
4x 288-Pin
Memory Support
DDR4 2133, 2400, 2666, 2800, 3000, 3200, 3466, 3600, 3866, 4000, 4400 MHz
M.2
1x M Key 2242, 2260, 2280, 22110 (PCIe 4.0 x4, SATA (Unspecified))
1x M Key 2242, 2260, 2280 (PCIe 3.0 x4, SATA (Unspecified))
Expansion Slots
1x PCIe 4.0 x16 (x16 mode)
2x PCIe 3.0 x1
Wi-Fi
No
Form Factor
Micro-ATX
CPU
Chipset
AMD B550
CPU Socket
AM4
Back Panel I/O
USB
2x USB-A (USB 3.1/3.2 Gen 2)
4x USB-A (USB 3.0 / 3.1/3.2 Gen 1)
Thunderbolt
No
Display
1x HDMI 2.1
1x DVI-D
1x VGA
Audio
3x 1/8" / 3.5 mm
Ethernet / Controller
1x Realtek RTL8111H Gigabit
PS/2
1x PS/2
Memory
Memory Slots
4x 288-Pin
Memory Support
DDR4 2133, 2400, 2666, 2800, 3000, 3200, 3466, 3600, 3866, 4000, 4400 MHz
Maximum Capacity
128 GB
Channel Architecture
Dual Channel
ECC Support
Non-ECC, ECC Unbuffered
Storage Expansion
SATA
4x SATA III
M.2
1x M Key 2242, 2260, 2280, 22110 (PCIe 4.0 x4, SATA (Unspecified))
1x M Key 2242, 2260, 2280 (PCIe 3.0 x4, SATA (Unspecified))
U.2
No
RAID Support
RAID 0, 1, 10
Internal I/O
Expansion Slots
1x PCIe 4.0 x16 (x16 mode)
2x PCIe 3.0 x1
USB
1x USB 3.0 / 3.1/3.2 Gen 1 Header (Supports 2 USB-A Port)
2x USB 2.0 Header (Supports 4 USB-A Port)
Multi-GPU Support
No
Air Cooling
1x 4-Pin CPU
2x 4-Pin System
1x 4-Pin Assistant
Power Connectors
1x 24-Pin Mainboard
1x 8-Pin ATX
Security
TPM Module
LED Header
3x RGB
Audio
1x Speaker
1x S/PDIF
Diagnostics
Clear CMOS
Legacy
1x Serial
BIOS
ROM
256 Mb
Front Panel I/O
Front Panel I/O
AAFP, USB 3.0 / 3.1/3.2 Gen 1
Audio
Audio Codec
Realtek ALC887 (7.1-Channel)
DAC
No
Wireless
Wi-Fi
No
Bluetooth
No
Software
OS Compatibility
Windows 10
Physical
Form Factor
Micro-ATX
Dimensions
9.6 x 9.6" / 24.4 x 24.4 cm
Packaging Info
Package Weight
2.1 lb
Box Dimensions (LxWxH)
10.7 x 10.3 x 2.2"

ASUS B550M-A/CSM Reviews

See any errors on this page? Let us know

Does it have flashback bios

Does it have flashback bios
Asked by: basem
The ASUS ASUS PRIME B550M-A/CSM AM4 Micro-ATX Motherboard features ASUS EZ Flash 3 for BIOS flashing without an OS.
Answered by: Alex D
Date published: 2023-12-05

Is this motherboard compatible with amd ryzen5 ...

Is this motherboard compatible with amd ryzen5 5600g ?
Asked by: Hussain
Is this motherboard compatible with AMD7 5700G
Answered by: Humberto
Date published: 2022-04-15

Can this motherboard run Ryzen 5600g at first ...

Can this motherboard run Ryzen 5600g at first time or we have to update BIOS
Asked by: Prekesh
The ASUS PRIME B550M-A/CSM AM4 Micro-ATX Motherboard is compatible with the AMD Ryzen 5 5600G processor.
Answered by: Calvin M
Date published: 2023-02-06

Can I add wifi card on this board ? Does it have ...

Can I add wifi card on this board ? Does it have a slot support that ?
Asked by: Hussain
Yes you can add a USB or a PCIe based WiFi.
Answered by: Reuben
Date published: 2021-06-13

Is Limited Manufacturer's Warranty valid ...

Is Limited Manufacturer's Warranty valid worldwide?? Thank you!! I am just missing the Motherboard and I do like its features for an entry-mid level gamer
Asked by: Jaime
The ASUS three-year limited manufacturer's warranty is only valid in Canada and the USA, when sold in either country/market.
Answered by: Raymond B
Date published: 2021-10-30

Do i need a cpu o update bios

Do i need a cpu o update bios
Asked by: basem
Unfortunately we have no way of knowing which BIOS version the ASUS PRIME B550M-A/CSM AM4 Micro-ATX Motherboard will ship with.
Answered by: Calvin M
Date published: 2023-12-04

Does it support r 5 5600x/5600 without any bios ...

Does it support r 5 5600x/5600 without any bios update
Asked by: basem
The ASUS PRIME B550M-A/CSM AM4 Micro-ATX Motherboard is compatible with AM4 processors such as the Ryzen 5 5600x, but unfortunately we have no way of knowing which version of the BIOS it will ship with.
Answered by: Calvin M
Date published: 2023-12-04
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