1x PCIe 4.0 x16 (x16), 2x PCIe 3.0 x1
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– DDR4 memory up to 4,800 MHz using OC
– 2x M.2 (1x PCIe 4.0 x4 and SATA 6G, 1x PCIe 3.0 x4 and SATA 6G), 4x SATA 6G
– USB on the I/O panel: 2x USB-A 3.1, 4x USB-A 3.0
– A total of 4 connections for fans
– With Gbit LAN
ASUS Prime B550M-A/CSM: Micro ATX motherboard for AMD Ryzen 5000 CPUs
The ASUS Prime B550M-A/CSM is a Micro ATX motherboard and has a PCI Express 4.0 slot with full x16 connectivity for graphics cards. The mainboard provides two PCIe 3.0 x1 slots for additional expansion cards. The four RAM banks support up to 128 GB of DDR4 RAM with a clock speed of up to 3,200 megahertz and can even handle clock speeds of up to 4,800 MHz via OC.
With the Corporate Stable Model (CSM), ASUS offers a special program with the aim of delivering stable and reliable motherboards for use in companies. Every ASUS CSM motherboard purchase comes with ASUS Control Center Express – server-grade IT management software. Together with product lifecycle support, ASUS CSM motherboards deliver comprehensive system protection, high stability and reliability in 24/7 operation.
For the best possible performance of the processor, it is recommended to regularly carry out BIOS updates for the mainboard. This is particularly true for motherboards that may have been delivered by the manufacturer with an early BIOS version.
Our King Mod Service will be happy to carry out a BIOS update to the latest version in advance:
Add BIOS update service to cart now
Please note that this may delay shipping preparation by 1 to 4 working days!
More information about AMD AM4 and the AMD Ryzen 5000 / 5000 G / 4000 G / 3000 CPUs can be found at the following link:
AMD AM4 at a glance
Technical details:
– format
– Micro ATX (244 x 244 mm)
– Chipset
– AMD B550
– Base:
– AM4 (for AMD Ryzen 5000 / 5000G / 4000G / 3000)
– R.A.M:
– 4x DDR4 (max. 3,200 MHz, 4,800 in OC)
– Dual channel
– max. 128GB
– Slots:
– 1x PCIe 4.0 x16 (x16)
– 2x PCIe 3.0 (electrical x1)
– Internal connections:
– 4x SATA 6G
– 1x M.2 (PCIe 4.0 x4 & SATA, 2242 – 22110, CPU)
– 1x M.2 (PCIe 3.0 x4 & SATA, 2242 – 2280, chipset)
– 2x USB 3.0 (one header, USB 3.2 Gen 1, max. 5 Gbit/s)
– 4x USB 2.0 (two headers, max. 480 Mbit/s)
– 1x front panel audio connector
– 1x system panel connector
– 1x SPI TPM header
– 1x S/PDIF out header
– 1x Clear CMOS jumper
– 1x COM port header 1x COM debug header
– Fan header:
– 1x CPU cooler (4-pin)
– 1x Optional CPU cooler (4-pin)
– 2x system fans (4-pin)
– RGB header:
– 2x 4-pin RGB header (12VGRB)
– 1x 3-pin RGB header (5VDG)
– External connections:
– 1x PS/2 combo for keyboard or mouse
– 2x USB 3.1 Type A (USB 3.2 Gen 2, max. 10 Gbit/s)
– 4x USB 3.0 Type A (USB 3.2 Gen 1, max. 5 Gbit/s)
– 1x Gigabit LAN (Realtek RTL8111H)
– 1xDVI
– 1xHDMI
– 1x VGA
– 3x 3.5 mm jack (Realtek ALC887, 7.1 sound)
– Power supply:
– 1x 24-pin ATX12V
– 1x 8-pin ATX12V
