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

OPEN BOX

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

The Open Box Product Disclaimer applies to this product. Please note that this product is non-returnable and non-refundable.

Overview

Specs

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

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

Additional Information
First Listed on Newegg	October 15, 2021

Warranty & Returns

Return for refund within: non-refundable, this item is Final Sale

Return for replacement within: non-replaceable, this item is Final Sale