ASUS PRIME B550M-K – AM4 micro-ATX motherboard
ASUS PRIME B550M-K – AM4 micro-ATX motherboard
ASUS PRIME B550M-K – AM4 micro-ATX motherboard
The ASUS PRIME B550M-K is a compact AM4 motherboard for affordable AMD Ryzen systems using DDR4 memory. It provides PCIe 4.0 from compatible processors, dual M.2 slots and four memory slots in a micro-ATX format.
Benefits
- Socket AM4 and AMD B550 chipset.
- Four DDR4 slots supporting up to 128 GB.
- PCIe 4.0 x16 with a compatible Ryzen processor.
- Two M.2 slots and four SATA ports.
- Compact micro-ATX form factor.
When should you choose this product?
Choose this motherboard when building or upgrading an affordable AM4 computer and you want to reuse DDR4 memory or a compatible Ryzen processor.
Ideal for
- Gaming computers with Ryzen 5 or Ryzen 7.
- Office and home computers on the AM4 platform.
- Upgrading existing DDR4 systems.
- Micro-ATX cases.
Compatibility
- Requires a processor included in ASUS's current CPU support list for the motherboard.
- Requires DDR4 UDIMM memory.
- The display outputs work only with a processor that includes integrated graphics.
- Check the BIOS version before installing newer Ryzen models.
Technical specifications
| Brand | ASUS |
| Series and model | PRIME B550M-K |
| Manufacturer part number | 90MB14V0-M0EAY0 |
| EAN | 4718017758284 |
| Processor socket | AMD AM4 |
| Chipset | AMD B550 |
| Form factor | Micro-ATX |
| Processor support | Selected AMD Ryzen 3000, 4000 G and 5000 series processors according to the CPU support list |
| Memory | 4 × DDR4 DIMM, dual channel, up to 128 GB |
| Primary expansion slot | PCIe 4.0 x16 with a compatible CPU |
| M.2 | 2 slots; maximum mode depends on the processor and slot |
| SATA | 4 × SATA 6 Gbit/s |
| Networking | 1 GbE |
| Wireless networking | No |
Dimensions and fit
The motherboard uses the micro-ATX format. Check the case support, standoffs, processor-cooler clearance and graphics-card length before installation.
Good to know
AM4 is an older platform than AM5 but can still be an economical choice for an upgrade. Processor, memory, cooler, storage and operating system are not included.
When is another product better?
Choose AM5 and DDR5 for a completely new build with greater future upgrade options. Choose a more capable AM4 motherboard when advanced overclocking or additional high-speed connections are required.
Why choose the ASUS PRIME B550M-K
- An affordable foundation for an AM4 system.
- Four memory slots and dual M.2.
- Compact format with PCIe 4.0 support.
PC & HiFi Örebro recommends
A practical choice when you already have a compatible AM4 processor or DDR4 memory. For a completely new system, we normally recommend comparing it with AM5 alternatives as well.