ASUS PRIME B550M-A/CSM

Home Motherboard ASUS PRIME B550M-A/CSM

Product Specification

CPU
Chipset : AMD B550
CPU Socket : AM4
Back Panel I/O
USB
2 x USB 3.1 / USB 3.2 Gen 2 Type-A
4 x USB 3.1 / USB 3.2 Gen 1 Type-A
Thunderbolt : None
Display
1 x HDMI 2.1
1 x DVI-D
1 x VGA
Audio : 3 x 3.5 mm
Ethernet / Controller : 1 x Realtek RTL8111H Gigabit
PS/2 : 1 x PS/2
Memory
Memory Slots : 4 x 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 : 4 x SATA III
M.2
1 x M Key 2242, 2260, 2280, 22110 (PCIe 4.0 x4, SATA (Unspecified))
1 x M Key 2242, 2260, 2280 (PCIe 3.0 x4, SATA (Unspecified))
U.2 : None
RAID Support : RAID 0, 1, 10
Internal I/O
Expansion Slots
1 x PCIe 4.0 x16 (x16 mode)
2 x PCIe 3.0 x1
USB
1 x USB 3.1 / USB 3.2 Gen 1 Header (Supports 2 USB Type-A Port)
2 x USB 2.0 Header (Supports 4 USB Type-A Port)
Multi-GPU Support : None
Air Cooling
1 x 4-Pin CPU
2 x 4-Pin System
1 x 4-Pin Assistant
Power Connectors
1 x 24-Pin Mainboard
1 x 8-Pin ATX
Security : TPM Module
LED Header : 3 x RGB
Audio
1 x Speaker
1 x S/PDIF
Diagnostics : Clear CMOS
Legacy : 1 x Serial
BIOS
ROM : 256 Mb
Front Panel I/O
I/O Connection Headers : AAFP, USB 3.1 / USB 3.2 Gen 1
Audio
Audio Codec : Realtek ALC887 (7.1-Channel)
Software
Supported Operating Systems : Windows 10 (64-Bit)
Physical
Form Factor : Micro-ATX
Packaging Info
Package Weight : 2.1 lb
Box Dimensions (LxWxH) : 10.7 x 10.3 x 2.2"

ASUS Prime B550M-A/CSM AMD AM4 (3rd Gen Ryzen microATX Commercial Motherboard (PCIe 4.0, ECC Memory, 1Gb LAN, HDMI 2.1/D-Sub, 4K@60HZ, TPM, ASUS Control Center Express)

  (334 Total Review)
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The ASUS Prime B550M-A/CSM is a compact, feature-packed microATX motherboard designed for AMD’s 3rd Gen Ryzen processors using the AM4 socket. The B550M-A/CSM supports AMD 3rd Generation Ryzen processors through the AM4 socket, allowing you to build systems with excellent performance at a great value.

This motherboard supports ECC memory, which is important for systems where data accuracy and reliability are critical. ECC memory automatically detects and corrects small data errors to prevent system crashes or data corruption. For video output, the board includes HDMI 2.1 and D-Sub (VGA) ports. HDMI 2.1 supports 4K resolution at 60Hz, offering sharp visuals and smooth video. 

Product Features

  • AMD AM4 Socket and PCIe 4. 0: The perfect pairing for 3rd Gen AMD Ryzen CPUs.
  • Fast Connectivity: 1Gb LAN, USB 3. 2 Gen 2 Type-C & Type-A ports, a front panel USB 3. 2 Gen 1 connector, plus HDMI 2. 1, D-Sub, and DVI display outputs,
  • First PCIe 4. 0 CSM motherboard: ASUS Corporate Stable Model with up to 36-month supply, EOL notice, and ECN control.
  • 5X Protection III: all-round protection with LANGuard, DRAM overcurrent protection, overvoltage protection, SafeSlot Core safeguards and stainless-steel back I/O.
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Product Specification

CPU
Chipset : AMD B550
CPU Socket : AM4
Back Panel I/O
USB
2 x USB 3.1 / USB 3.2 Gen 2 Type-A
4 x USB 3.1 / USB 3.2 Gen 1 Type-A
Thunderbolt : None
Display
1 x HDMI 2.1
1 x DVI-D
1 x VGA
Audio : 3 x 3.5 mm
Ethernet / Controller : 1 x Realtek RTL8111H Gigabit
PS/2 : 1 x PS/2
Memory
Memory Slots : 4 x 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 : 4 x SATA III
M.2
1 x M Key 2242, 2260, 2280, 22110 (PCIe 4.0 x4, SATA (Unspecified))
1 x M Key 2242, 2260, 2280 (PCIe 3.0 x4, SATA (Unspecified))
U.2 : None
RAID Support : RAID 0, 1, 10
Internal I/O
Expansion Slots
1 x PCIe 4.0 x16 (x16 mode)
2 x PCIe 3.0 x1
USB
1 x USB 3.1 / USB 3.2 Gen 1 Header (Supports 2 USB Type-A Port)
2 x USB 2.0 Header (Supports 4 USB Type-A Port)
Multi-GPU Support : None
Air Cooling
1 x 4-Pin CPU
2 x 4-Pin System
1 x 4-Pin Assistant
Power Connectors
1 x 24-Pin Mainboard
1 x 8-Pin ATX
Security : TPM Module
LED Header : 3 x RGB
Audio
1 x Speaker
1 x S/PDIF
Diagnostics : Clear CMOS
Legacy : 1 x Serial
BIOS
ROM : 256 Mb
Front Panel I/O
I/O Connection Headers : AAFP, USB 3.1 / USB 3.2 Gen 1
Audio
Audio Codec : Realtek ALC887 (7.1-Channel)
Software
Supported Operating Systems : Windows 10 (64-Bit)
Physical
Form Factor : Micro-ATX
Packaging Info
Package Weight : 2.1 lb
Box Dimensions (LxWxH) : 10.7 x 10.3 x 2.2"