ASUS PRIME B550M-K ARGB mATX Motherboard | AM4 | 2x DDR4 Slots
KEY FEATURES
- AMD AM4 Socket: Ready for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
- Ultrafast Connectivity: PCIe 4.0, dual M.2 slots, Realtek 1Gb Ethernet, rear USB 3.2 Gen 1 ports and front USB 3.2 Gen 1 Type-C®
- Comprehensive Cooling: PCH heatsink, hybrid fan headers and Fan Xpert 2+
- Aura Sync RGB Lighting: Onboard Addressable Gen 2 headers for RGB LED strips, easily synced with Aura Sync-capable hardware
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Frequently Asked Questions
What processors are compatible with the ASUS PRIME B550M-K?
How many memory slots does this motherboard have?
What are the cooling options available?
ASUS PRIME B550M-K ARGB mATX Motherboard | AM4 | 2x DDR4 Slots
Description
The ASUS PRIME B550M-K ARGB is a micro ATX motherboard that brings modern connectivity to compact AMD Ryzen builds without breaking the budget. Built around the AMD B550 chipset with an AM4 socket, this board handles Ryzen 5000, 4000 and 3000 series processors while offering PCIe 4.0 support for the latest graphics cards and storage drives. Its mATX form factor makes it ideal for smaller cases where space is at a premium, yet it still packs enough features for solid mainstream performance.
Memory support covers DDR4 speeds from 2133MHz up to an impressive 5100MHz across two DIMM slots, with a maximum capacity of 64GB. The board includes dual M.2 slots for fast NVMe storage, alongside traditional SATA connectivity for additional drives. Expansion options include one PCIe 4.0 x16 slot for your graphics card and a PCIe 3.0 x1 slot for add-in cards. Connectivity is well-covered with Gigabit Ethernet, DisplayPort and HDMI outputs for integrated graphics, plus a mix of rear USB 3.2 Gen 1 ports and a front-facing USB 3.2 Gen 1 Type-C connector.
The ARGB designation refers to the addressable RGB LED pin header that lets you connect and control compatible lighting strips or fans through ASUS Aura Sync software. Your purchase includes the motherboard, I/O shield, SATA cables for drive connections, and the necessary documentation to get your system up and running. The board supports memory overclocking profiles to help you get the most from faster DDR4 kits, making it a practical choice for builders who want modern features in a compact, affordable package.
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- Next Business Day: £6.99
- 2 days Delivery: £4.99
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- Orders Over £99.00: Free Standard Delivery
| Processor | |
|---|---|
| Processor manufacturer | AMD |
| Processor socket | Socket AM4 |
| Memory | |
|---|---|
| Supported memory types | DDR4-SDRAM |
| Number of memory slots | 2 |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| Supported memory clock speeds | 2133,2400,2666,2800,2933,3000,3200,3333,3400,3466,3600,3733,3866,4000,4133,4200,4266,4333,4400,4466,4600,4866,5100 MHz |
| Maximum internal memory | 64 GB |
| Unbuffered memory | Yes |
| Storage controllers | |
|---|---|
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2 |
| Number of storage drives supported | 6 |
| RAID support | Yes |
| RAID levels | 0, 1, 10 |
| Internal I/O | |
|---|---|
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 4 |
| S/PDIF out connector | Yes |
| Front panel audio connector | Yes |
| Front panel connector | Yes |
| ATX Power connector (24-pin) | Yes |
| CPU fan connector | Yes |
| Number of chassis fan connectors | 2 |
| 12V power connector | Yes |
| TPM connector | Yes |
| Number of COM connectors | 1 |
| RGB LED pin header | Yes |
| Rear panel I/O ports | |
|---|---|
| USB 2.0 ports quantity | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| Ethernet LAN (RJ-45) ports | 1 |
| PS/2 ports quantity | 1 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| DisplayPorts quantity | 1 |
| DisplayPort version | 1.4 |
| Line-in | Yes |
| Headphone outputs | 1 |
| Microphone in | Yes |
| Network | |
|---|---|
| Ethernet LAN | Yes |
| Ethernet interface type | Gigabit Ethernet |
| Wake-on-LAN ready | Yes |
| Wi-Fi | No |
| Top Wi-Fi standard | Not available |
| Features | |
|---|---|
| Component for | PC |
| Motherboard form factor | micro ATX |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B550 |
| Audio output channels | 7.1 channels |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Expansion slots | |
|---|---|
| PCI Express x1 (Gen 3.x) slots | 1 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| PCI Express x16 (Gen 3.x) slots | 1 |
| Number of M.2 (M) slots | 2 |
| BIOS | |
|---|---|
| BIOS type | EFI AMI |
| BIOS memory size | 128 Mbit |
| Clear CMOS jumper | Yes |
| Packaging data | |
|---|---|
| Package width | 260 mm |
| Package depth | 270 mm |
| Package height | 515 mm |
| Package weight | 960 g |
| Weight & dimensions | |
|---|---|
| Width | 244 mm |
| Depth | 221 mm |
| Height | 36.5 mm |
| Packaging content | |
|---|---|
| Cables included | SATA |
| Other features | |
|---|---|
| Weight | 460 g |
Frequently Asked Questions
What processors are compatible with the ASUS PRIME B550M-K?
How many memory slots does this motherboard have?
What are the cooling options available?
Can I customise the RGB lighting?
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