Learn more about ASUS PRO B550M-C/CSM

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 ProcessorsDDR4 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 ProcessorsDDR4 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 Processors1 x PCIe 4.0 x16 (x16 mode) *AMD Ryzen 4000 G-Series Desktop Processors1 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 Chipset1 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

SATA 6Gb/s

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 supportAMD 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 supportAMD 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 DisplayPort1 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

10/100/1000Mbps

Rear Panel Ports

Back I/O Ports

1 x Realtek RTL8111H1 x PS/2 keyboard (purple)1 x PS/2 mouse (green)2 x DisplayPort1 x HDMI2 x USB 3.2 Gen 2 (1 x Type-A+1 x USB Type-C)2 x USB 3.2 Gen 1 Type-A2 x USB 2.03 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 header1 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 header1 x Chassis intrusion header1 x LPC Debug header1 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

Windows 11 Compatibility

Windows 11

Supported

Features

Features

Software Features:ASUS Exclusive SoftwareIT Management software supported- ASUS Control Center Express (ACCE) ASUS Special Features:ASUS Q-Design- ASUS Q-DIMM- ASUS Q-SlotASUS Thermal Solution- Aluminum heatsink designASUS EZ DIY- Box HeadersBespoke Motherboard Design & Business Focused Features- ASUS Self Recovering BIOS- ASUS Event Log- ASUS Commercial BIOS kit- Anti-Moisture- 24/7 Reliability- Overcurrent ProtectionTPM2.0 IC OnboardBIOS:256MB Flash ROM, UEFI AMI BIOSManageability:WOL by PXEOperating System:Windows 10 64-bit