ASUS PRIME B550M-K AM4 AMD B550 USB 3.0 HDMI Micro ATX AMD Motherboard
Learn more about the ASUS PRIME B550M-K
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Model
Brand ASUS
Model PRIME B550M-K
Supported CPU
CPU Socket Type AM4
CPU Type BIOS update might require for AMD Zen 3 Ryzen 5000 series CPU. Refer to ASUS website for CPU support list.
Chipsets
Chipset AMD B550
Memory
Number of Memory Slots 4x288pin (DDR4)
Memory Standard 3rd Gen AMD Ryzen 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 *
Next Generation AMD Ryzen PRO 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 *
ECC Memory (ECC mode) support varies by CPU.
* 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 3rd Gen AMD Ryzen Processors
1 x PCIe 4.0 x16 (x16 mode)
PCI Express 3.0 x16 1 x PCI Express 3.0 x16
PCI Express x16 None
PCI Express x1 AMD B550 Chipset
2 x PCIe 3.0 x1
Storage Devices
Serial ATA (SATA) 4 x SATA 6Gb/s
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
SATA RAID 0/1/10
