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.
- AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ processors
- Comprehensive cooling: PCH heatsink and Fan Xpert 2+
- Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A
- 5X Protection III: Multiple hardware safeguards for all-around system protection
General
| Unit Calculated Weight | 0.99 kg |
| Unit Calculated Volume | 0.004824 cubm |
| Units per Shipping Box | 10 |
| Units per Pallet | 0 |
| Summary | ASUS PRIME B550M-K. Processor manufacturer: AMD, Processor socket: Socket AM4, Compatible processor series: AMD Ryzen 3000 Series. Supported memory types: DDR4-SDRAM, Maximum internal memory: 128 GB, Memory slots type: DIMM. Supported storage drive interfaces: M.2, SATA. LAN controller: Realtek RTL8111H. Motherboard form factor: micro ATX, Motherboard chipset family: AMD, Motherboard chipset: AMD B550 |
| CnCode | 84733020 |
| Unit Box Height | 0.05 |
| Unit Box Length | 0.27 |
| Unit Box Width | 0.265 |
Features
| Motherboard chipset | AMD B550 |
| Motherboard chipset family | AMD |
| Motherboard form factor | micro ATX |
| Windows operating systems supported | Windows 10 |
Processor
| Compatible processor series | AMD Ryzen 3000 Series |
| Processor manufacturer | AMD |
| Processor socket | Socket AM4 |
Memory
| Maximum internal memory | 128 GB |
| Memory slots type | DIMM |
| Number of memory slots | 4 |
| Supported memory clock speeds | 2133/2400/2666/2800/3000/3200/3333/3466/3600/3733/3866/4000/4133/4266/4400/4600 MHz |
| Supported memory types | DDR4-SDRAM |
Storage controllers
| Supported storage drive interfaces | M.2,SATA |
Internal I/O
| ATX Power connector (24-pin) | Yes |
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 1 |
Rear panel I/O ports
| DVI-D ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 1 |
| HDMI ports quantity | 1 |
| PS/2 ports quantity | 1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 2 |
Network
| Ethernet LAN | Yes |
| LAN controller | Realtek RTL8111H |
| Wi-Fi | No |
Expansion slots
| Number of M.2 (M) slots | 2 |
| PCI Express x1 (Gen 3.x) slots | 2 |
| PCI Express x16 (Gen 4.x) slots | 1 |
BIOS
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |
Logistics data
| Harmonized System (HS) code | 84733020 |
Weight & dimensions
| Depth | 244 mm |
| Height | 51 mm |
| Width | 244 mm |
Other features
| Weight | 785 g |
