ASUS Prime B550M-K ARGB Micro ATX - Motherboard
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£99.34 from Onbuy.com
- Supports AMD Ryzen processors •
- Dual M.2 slots with PCIe 4.0 support •
- ARGB lighting customization •
- 2x DDR4 RAM slots, up to 64GB •
- More features
Offers updated on: 26/06/2026. Paid and non-exhaustive ads ★ The ratings are generated from multiple sources, including data provided by the merchant and publicly available information.
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Description
ASUS Prime B550M-K ARGB Micro ATX brings robust AM4 platform support and stylish ARGB lighting to compact builds, ideal for users assembling a modern AMD-based PC.
This micro ATX motherboard is built around the AMD B550 chipset and supports Socket AM4 processors, making it compatible with a wide range of Ryzen CPUs. The board is ready for Windows 10 x64 and Windows 11 and offers both PCIe 4.0 and PCIe 3.0 expansion for flexible upgrade paths.
Memory support is strong for a micro ATX board, with two DIMM slots supporting up to 64 GB of DDR4 in dual-channel mode and a broad range of speeds up to 5100 MHz (overclocked). The unbuffered DDR4 support and extensive memory clock compatibility make it suitable for both productivity and gaming systems.
Storage options are versatile: two M.2 slots and four SATA III connectors allow for combinations of high-speed NVMe SSDs and larger capacity HDDs or SATA SSDs. RAID 0, 1 and 10 support provides options for performance and redundancy depending on your needs.
Connectivity covers everyday and enthusiast needs with USB 2.0 and USB 3.2 Gen 1 ports, a PS/2 legacy port, and a Gigabit Ethernet port with Wake-on-LAN support. Display outputs include HDMI 2.1 and DisplayPort 1.4 for modern monitors, while 7.1-channel audio with S/PDIF out serves immersive sound setups.
Cooling and system control are practical with multiple fan headers (CPU and two chassis fans), TPM and clear CMOS jumper for maintenance, plus an RGB LED header to sync case lighting. The EFI AMI BIOS with 128 Mbit memory gives straightforward firmware control and compatibility features.
Recommended use cases include compact gaming rigs that benefit from PCIe 4.0 GPU or storage, home-office PCs needing reliable connectivity and RAID-capable storage, and media systems leveraging 7.1 audio and modern display outputs. The included SATA cables and compact dimensions make installation and cable routing straightforward.
- AMD B550 chipset with Socket AM4 support
- Dual-channel DDR4 up to 64 GB and 5100 MHz (OC)
- 2x M.2 + 4x SATA III with RAID 0/1/10
- HDMI 2.1, DisplayPort 1.4 and Gigabit Ethernet
- ARGB header, multiple fan connectors and 7.1 audio
Features
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
- 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
- Number of COM connectors:1
- TPM connector:Yes
- 12V power connector:Yes
- 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
- Headphone outputs:1
- Line-in:Yes
- Microphone in:Yes
Network
- Ethernet LAN:Yes
- Ethernet interface type:Gigabit Ethernet
- Wake-on-LAN ready:Yes
Features
- Motherboard chipset:AMD B550
- Audio output channels:7.1 channels
- Component for:PC
- Motherboard form factor:micro ATX
- Motherboard chipset family:AMD
- Windows operating systems supported:Windows 10 x64, Windows 11
Expansion slots
- PCI Express x1 (Gen 3.x) slots:1
- PCI Express x16 (Gen 3.x) slots:1
- PCI Express x16 (Gen 4.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
Price history
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