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ASUS PRO B550M-C/CSM AM4 AMD B550 USB 3.0 HDMI Micro ATX AMD Motherboard

AMD B550
AMD AM4 Socket for AMD Ryzen 5000 Series / 4000 G-Series / 3000 Series Desktop Processors
AMD Ryzen 5000 Series/3000 Series Desktop Processors
DDR4 4600(O.C)/ 4400(O.C)/ 4266(O.C.)/ 4133(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3733(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3333(O.C.)/ 3200/ 3000/ 2800/ 2666/ 2400/ 2133 MHz Un-buffered Memory
AMD Ryzen 4000 G-Series Desktop Processors
DDR4 4800(O.C.)/ 4600(O.C)/ 4466(O.C.)/ 4400(O.C)/ 4266(O.C.)/ 4133(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3733(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3333(O.C.)/ 3200/ 3000/ 2800/ 2666/ 2400/ 2133 MHz Un-buffered Memory

Overview

Specs

Reviews (13)

Model
Brand	ASUS
Model	PRO B550M-C/CSM

Supported CPU
CPU Socket Type	AM4
CPU Type	AMD AM4 Socket for AMD Ryzen 5000 Series / 4000 G-Series / 3000 Series Desktop Processors * * Refer to www.asus.com for CPU support list

Chipsets
Chipset	AMD B550

Memory
Number of Memory Slots	4x288pin (DDR4)
Memory Standard	AMD Ryzen 5000 Series/3000 Series Desktop Processors DDR4 4600(O.C)/ 4400(O.C)/ 4266(O.C.)/ 4133(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3733(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3333(O.C.)/ 3200/ 3000/ 2800/ 2666/ 2400/ 2133 MHz Un-buffered Memory * AMD Ryzen 4000 G-Series Desktop Processors DDR4 4800(O.C.)/ 4600(O.C)/ 4466(O.C.)/ 4400(O.C)/ 4266(O.C.)/ 4133(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3733(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3333(O.C.)/ 3200/ 3000/ 2800/ 2666/ 2400/ 2133 MHz Un-buffered Memory * * Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
Maximum Memory Supported	128GB
Channel Supported	Dual Channel
Memory Performance Profile	Intel XMP 2.0

Expansion Slots
PCI Express 4.0 x16	AMD Ryzen 5000 Series/3000 Series Desktop Processors 1 x PCIe 4.0 x16 (x16 mode) * AMD Ryzen 4000 G-Series Desktop Processors 1 x PCIe 3.0 x16 (x16 mode) * Support PCIe bifurcation for RAID on CPU function.
PCI Express 3.0 x16	1 x PCI Express 3.0 x16
PCI Express x16	None
PCI Express x4	AMD B550 Chipset 1 x PCIe 3.0 x4 * * The PCIe x4 slot runs x2 mode when the PCI slot is occupied.
PCI Slots	1 x PCI Slot

Storage Devices
Serial ATA (SATA)	4 x SATA 6Gb/s
M.2	AMD Ryzen 5000 Series/3000 Series Desktop Processors: 1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 4.0 x4 and SATA modes) storage devices support AMD Ryzen 4000 G-Series Processors: 1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support AMD B550 Chipset: 1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support
SATA RAID	0/1/10

Onboard Video
Onboard Video Chipset	Supported only by CPU with integrated graphic: 2 x DisplayPort 1 x HDMI 2.1 (4K@60HZ) * Graphics specifications may vary between CPU types.

Onboard Audio
Audio Chipset	Realtek ALC887/897
Audio Channels	7.1 Channels * Choose the chassis with HD audio module in front panel to support 8-channel audio output.

Onboard LAN
LAN Chipset	Realtek RTL8111H
Max LAN Speed	1Gbps

Rear Panel Ports
Back I/O Ports	1 x Realtek RTL8111H 1 x PS/2 keyboard (purple) 1 x PS/2 mouse (green) 2 x DisplayPort 1 x HDMI 2 x USB 3.2 Gen 2 (1 x Type-A+1 x USB Type-C) 2 x USB 3.2 Gen 1 Type-A 2 x USB 2.0 3 x Audio jack(s)
HDMI	1 x HDMI
USB 3.0	2 x USB 3.0

Internal I/O Connectors
Onboard USB	2 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 4 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connector(s) support(s) additional 3 USB 2.0 port(s)
Other Connectors	1 x CPU Fan connector(s) 2 x Chassis Fan connector(s) 1 x LPT header 1 x Thunderbolt header(s) 1 x Front panel audio connector(s) (AAFP) 1 x SMBus header(s) 1 x System panel(s) 1 x Clear CMOS jumper(s) 1 x COM port header 1 x Chassis intrusion header 1 x LPC Debug header 1 x Speaker connector

Physical Spec
Form Factor	Micro ATX
LED Lighting	None RGB
Dimensions (W x L)	9.6" x 9.6"
Power Pin	1 x 24-pin EATX Power connector(s) 1 x 8-pin EATX 12V Power connectors

Software Feature
Windows 11	Supported

Features
Features	Software Features: ASUS Exclusive Software IT Management software supported - ASUS Control Center Express (ACCE) ASUS Special Features: ASUS Q-Design - ASUS Q-DIMM - ASUS Q-Slot ASUS Thermal Solution - Aluminum heatsink design ASUS EZ DIY - Box Headers Bespoke Motherboard Design & Business Focused Features - ASUS Self Recovering BIOS - ASUS Event Log - ASUS Commercial BIOS kit - Anti-Moisture - 24/7 Reliability - Overcurrent Protection TPM2.0 IC Onboard BIOS: 256MB Flash ROM, UEFI AMI BIOS Manageability: WOL by PXE Operating System: Windows 10 64-bit

Packaging
Package Contents	Accessories: 1 x ACC Express Activation Key Card I/O Shield 2 x SATA 6Gb/s cable(s) 1 x Supporting DVD User manual 3 x M.2 SSD screw package(s) 2 x M.2 SSD Hex screw packages

Additional Information
First Listed on Newegg	December 31, 2020

Warranty & Returns

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Warranty Notice:
This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.