Product	ASUS PRIME B550M-A/CSM - mATX - AMD B550 Chipset - 4x SATA 6Gb/s - Single Realtek GbE - 2x M.2 SATA/NVMe
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Manufacturer	ASUS
Part Number	PRIME B550M-A/CSM
Main Specifications
Product Type	Desktop Board
CPU Socket	Socket AM4
North Bridge	AMD B550
Form Factor	mATX
Detailed Specifications
Supported Processor	Build in AMD AM4 Socket 3rd Gen AMD Ryzen™ Processors
Memory Technology	DDR4 Un-buffered ECC and Non-ECC
Memory Speed	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
Memory Slots	4x 288-pin DIMM sockets
Max Memory Support	128 GB
Expansion Slots	3rd Gen AMD Ryzen™ Processors 1 x PCIe 4.0 x16 (x16 mode) AMD B550 Chipset 2 x PCIe 3.0 x1
Network Controller(s)	Realtek RTL8111H 1Gb Ethernet
Sound Controller	Realtek ALC887 7.1 Surround Sound High Definition Audio CODEC - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback Audio Feature: - LED-illuminated design - Audio Shielding - Dedicated audio PCB layers - Premium Japanese audio capacitors
Back-panel Interfaces	1 x PS/2 keyboard/mouse combo port 1 x DVI-D 1 x D-Sub 1 x HDMI 1 x LAN (RJ45) port 2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A) 4 x USB 3.2 Gen 1 (blue) Type-A 3 x Audio jacks
On-Board Interfaces	1x CPU Fan connector 1x CPU OPT Fan connector 2x Chassis Fan connectors 2x Aura RGB Strip Headers 1x Addressable Gen 2 header 1x USB 3.2 Gen 1(up to 5Gbps) connector supports additional 2 USB 3.2 Gen 1 ports 2x USB 2.0 connectors support additional 4 USB 2.0 ports 1x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIe 4.0 x4 mode) 1x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode) 1x SPI TPM header 4x SATA 6Gb/s connectors 1x S/PDIF out header 1x 24-pin EATX Power connector 1x 8-pin EATX 12V Power connectors 1x Front panel audio connector (AAFP) 1x Clear CMOS jumper 1x System panel connector 1x COM port header 1x Speaker connector
BIOS Type	256 Mb Flash ROM, UEFI AMI BIOS
PCI Express M.2	3rd Gen AMD Ryzen™ Processors: 1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110 (PCIE 4.0 x4 and SATA modes) storage devices support AMD B550 Chipset: 1 x M.2 Socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support
USB Ports	Rear USB Port ( Total 6 ) 2 x USB 3.2 Gen 2 port(s)(2 x Type-A) 4 x USB 3.2 Gen 1 port(s)(4 x Type-A) Front USB Port ( Total 2 ) 2 x USB 3.2 Gen 1 port(s)(2 x Type-A)
USB 2.0 Ports	Front USB Port ( Total 4 ) 4 x USB 2.0 port(s)(4 x Type-A)
VGA Ports	1 x D-Sub
DVI Ports	1 x DVI-D
HDMI Ports	1 x HDMI 2.1 (4K@60HZ)
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