ASUS

ASUS Prime B550M-K AMD AM4 Micro-ATX Motherboard

Processor manufacturerAMD
Maximum internal memory64 GB
Supported storage drive typesHDD & SSD
RAID levels0/1/10
Audio output channels7.1
Windows operating systems supportedWindows 10 x64/Windows 11

The ASUS Prime B550M-K is a compact AMD B550 motherboard built for Socket AM4 processors. This micro-ATX board delivers reliable performance for gaming, streaming, and content creation without demanding unnecessary desk space.

Description

Core Features for Builders on a Budget

AMD B550 chipset with full PCIe 4.0 support for next-gen graphics cards and NVMe storage
Two DDR4 memory slots supporting high-capacity RAM for multitasking and heavy workloads
Dual M.2 slots for fast SSD configurations and improved boot times
Comprehensive I/O: four USB 3.2 ports, HDMI and DisplayPort video outputs, plus Gigabit Ethernet
RGB lighting header for customizable case aesthetics

Ideal for budget-conscious builders upgrading from older AM4 systems or first-time PC assemblers looking for a dependable foundation. Works seamlessly with Ryzen 3000, 5000, and 7000 series processors.

Specifications

General

Brand	ASUS
Line-in	Yes
BIOS type	EFI AMI
Component for	PC
BIOS memory size	128
Clear CMOS jumper	Yes
Headphone outputs	1
Unbuffered memory	Yes
RGB LED pin header	Yes
Number of memory slots	2
Motherboard form factor	micro ATX
Number of M.2 (M) slots	2
PCI Express x1 (Gen 3.x) slots	1
PCI Express x16 (Gen 3.x) slots	1
PCI Express x16 (Gen 4.x) slots	1
EAN	4711387316030

Processor

Processor manufacturer	AMD
Motherboard chipset	AMD B550
Processor socket	Socket AM4
CPU fan connector	Yes
Motherboard chipset family	AMD

Memory

Maximum internal memory	64 GB
Memory channels	Dual-channel
Memory slots type	DIMM

Storage

Supported storage drive types	HDD & SSD
Supported storage drive interfaces	M.2

Audio

Microphone in	Yes
Audio output channels	7.1
Front panel audio connector	Yes

Ports

HDMI ports quantity	1
HDMI version	2.1
USB 2.0 ports quantity	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	4
Ethernet LAN	Yes
Ethernet LAN (RJ-45) ports	1
TPM connector	Yes
Wake-on-LAN ready	Yes
USB 2.0 connectors	2
12V power connector	Yes
DisplayPort version	1.4
PS/2 ports quantity	1
S/PDIF out connector	Yes
DisplayPorts quantity	1
Front panel connector	Yes
Ethernet interface type	Gigabit Ethernet
Number of COM connectors	1
ATX Power connector (24-pin)	Yes
Number of SATA III connectors	4
Number of chassis fan connectors	2
USB 3.2 Gen 1 (3.1 Gen 1) connectors	2

Software & security

Windows operating systems supported	Windows 10 x64/Windows 11

Performance & capacities

RAID levels	0/1/10
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