ASUS PRIME B550M-K AMD B550 Socket AM4 micro ATX
AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A
ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.
Tune It Your Way
Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work – maximizing your productivity.
Cooler by Design
Prime B550M-K is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS, ensuring your rig stays cool and stable under intense workloads.
Build on a Solid Foundation
Prime B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options.
Little Things Make a Big Difference
Prime B550 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive interface that let you customize your system to create a uniquely personal look.
Outstanding Audio
Combined onboard features deliver elevated audio
Intelligent design and premium hardware create audio quality unlike anything you’ve ever experienced.
| Processor |
| Compatible processor series |
AMD Ryzen 3000 Series |
| Processor socket |
Socket AM4 |
| Processor manufacturer |
AMD |
| Memory |
| Maximum internal memory |
128 GB |
| Supported memory clock speeds |
2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600 MHz |
| Memory slots type |
DIMM |
| Number of memory slots |
4 |
| Supported memory types |
DDR4-SDRAM |
| Storage controllers |
| Supported storage drive interfaces |
M.2, SATA |
| Internal I/O |
| ATX Power connector (24-pin) |
Yes |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors |
1 |
| USB 2.0 connectors |
2 |
| Rear panel I/O ports |
| DVI-D ports quantity |
1 |
| HDMI ports quantity |
1 |
| PS/2 ports quantity |
1 |
| Ethernet LAN (RJ-45) ports |
1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity |
2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity |
4 |
| Network |
| Wi-Fi |
No |
| LAN controller |
Realtek RTL8111H |
| Ethernet LAN |
Yes |
| Features |
| Windows operating systems supported |
Windows 10 |
| Motherboard chipset |
AMD B550 |
| Motherboard chipset family |
AMD |
| Motherboard form factor |
micro ATX |
| Expansion slots |
| Number of M.2 (M) slots |
2 |
| PCI Express x16 (Gen 4.x) slots |
1 |
| PCI Express x1 (Gen 3.x) slots |
2 |
| BIOS |
| BIOS memory size |
256 Mbit |
| BIOS type |
UEFI AMI |
| Logistics data |
| Harmonized System (HS) code |
84733020 |
| Weight & dimensions |
| Height |
51 mm |
| Depth |
244 mm |
| Width |
244 mm |
| Other features |
| Weight |
785 g |
