ASUS PRIME B550M-K ARGB | AMD B550 | AM4 | DDR4 | PCIe 4.0 | Dual M.2 | 1Gb LAN | mATX

The ASUS PRIME B550M-K ARGB is a compact and versatile micro-ATX motherboard designed for AMD Ryzen desktop systems. Built around the AMD B550 chipset and AM4 socket, it supports AMD Ryzen 5000 Series, Ryzen 5000 G-Series, Ryzen 4000 G-Series, and Ryzen 3000 Series desktop processors.

With support for up to 64GB of DDR4 memory, PCIe 4.0, dual M.2 slots, four SATA 6Gb/s ports, Realtek 1Gb Ethernet, USB 3.2 Gen 1 connectivity, DisplayPort, HDMI, and Aura Sync RGB lighting, the PRIME B550M-K ARGB provides an excellent foundation for everyday PCs, gaming systems, home-office computers, and budget-conscious Ryzen builds.

Its compact micro-ATX design makes it particularly suitable for smaller PC cases while retaining the essential features required for a modern AMD desktop platform.

Key Features

AMD Ryzen AM4 Platform

The PRIME B550M-K ARGB is built around the proven AMD AM4 platform and supports a wide range of Ryzen processors.

• AMD Socket AM4
• AMD Ryzen 5000 Series Desktop Processors
• AMD Ryzen 5000 G-Series Desktop Processors
• AMD Ryzen 4000 G-Series Desktop Processors
• AMD Ryzen 3000 Series Desktop Processors
• AMD B550 chipset
• AMD Ryzen platform support

CPU compatibility depends on the processor and BIOS version. Refer to ASUS CPU support information for supported models.

Dual-Channel DDR4 Memory

Two DIMM slots support up to 64GB of DDR4 memory and high memory overclocking speeds.

• 2 × DDR4 DIMM slots
• Up to 64GB total memory
• Dual-channel memory architecture
• Up to DDR4-5100 (OC)
• Unbuffered memory
• ECC memory support varies by CPU
• Supports a wide range of DDR4 speeds

Supported memory speeds and configurations depend on the installed CPU and memory modules.

PCIe 4.0 Expansion

The motherboard provides PCIe 4.0 bandwidth for compatible Ryzen processors.

• 1 × PCIe 4.0 x16 slot
• Supports x16 mode with compatible Ryzen 5000/3000 Series processors
• PCIe 3.0 x16 operation with Ryzen 5000 G-Series and 4000 G-Series processors
• 1 × PCIe 3.0 x1 slot

The PCIe generation and bandwidth depend on the processor installed.

Dual M.2 Storage

The PRIME B550M-K ARGB features two M.2 slots for fast NVMe and SATA-based storage devices.

• 2 × M.2 Key M slots
• M.2_1 supports PCIe 4.0 x4 and SATA modes with compatible Ryzen 5000/3000 Series processors
• M.2_1 supports PCIe 3.0 x4 and SATA modes with Ryzen 5000 G-Series/4000 G-Series processors
• M.2_2 supports PCIe 3.0 x4 and SATA modes
• Supports 2242, 2260, 2280, and selected 22110 drives
• 4 × SATA 6Gb/s ports
• AMD RAIDXpert2 Technology
• PCIe RAID 0/1/10
• SATA RAID 0/1/10

DisplayPort & HDMI

Compatible Ryzen processors with integrated graphics can take advantage of the motherboard's onboard display outputs.

• 1 × DisplayPort
• 1 × HDMI
• DisplayPort supports up to 4K at 60 Hz
• HDMI supports up to 4K at 60 Hz
• Display output capability depends on the installed processor

A dedicated graphics card is required when using a Ryzen processor without integrated graphics.

USB Connectivity

The PRIME B550M-K ARGB provides practical high-speed connectivity for peripherals, storage devices, and accessories.

Rear USB:

• 4 × USB 3.2 Gen 1 5 Gbps Type-A
• 2 × USB 2.0 Type-A

Front USB:

• 1 × USB 3.2 Gen 1 5Gbps Type-C connector
• 1 × USB 3.2 Gen 1 header supporting 2 additional USB 3.2 Gen 1 ports
• 2 × USB 2.0 headers supporting 4 additional USB 2.0 ports

Realtek 1 Gb Ethernet

The integrated Realtek Ethernet controller provides reliable wired networking for everyday computing, gaming, and home-office applications.

• Realtek 1 Gb Ethernet
• ASUS LANGuard
• Wired network connectivity
• Wake-on-LAN support
• PXE support

7.1-Channel HD Audio

The motherboard features integrated Realtek 7.1-channel high-definition audio.

• Realtek 7.1 Surround Sound HD Audio Codec
• Up to 24-bit/192 kHz playback
• Jack detection
• Multi-streaming
• Front-panel jack retasking
• Audio shielding
• Premium audio capacitors
• Dedicated audio PCB layers

A chassis with an HD audio front-panel module is required for 7.1-channel front-panel audio output.

Aura Sync RGB

Customize your PC's lighting with ASUS Aura Sync-compatible components.

• 3 × Addressable Gen 2 headers
• Aura Sync support
• Synchronize compatible RGB lighting components
• Addressable RGB LED strip support

Comprehensive Cooling

The PRIME B550M-K ARGB includes essential cooling connectivity for maintaining stable temperatures.

• Aluminum heatsink design
• 1 × CPU fan header
• 2 × chassis fan headers
• Fan Xpert 2+ support
• Flexible fan control through ASUS software

ASUS 5X Protection III

ASUS protection features help safeguard the motherboard and connected components.

• DIGI+ VRM
• ASUS LANGuard
• Overvoltage Protection
• SafeSlot Core
• Stainless-steel back I/O

ASUS Q-Design

The ASUS Q-Design simplifies PC assembly, component installation, and troubleshooting.

• Q-DIMM
• Q-LED Core
• Q-Slot

ASUS EZ DIY

The PRIME B550M-K ARGB includes ASUS BIOS and installation features designed to simplify system setup and maintenance.

• ProCool
• ASUS CrashFree BIOS 3
• ASUS EZ Flash 3
• ASUS UEFI BIOS EZ Mode

Software Features

ASUS Exclusive Software

• Armoury Crate
• Aura Creator
• Aura Sync
• AI Suite 3
• Performance and Power-Saving Utility
• TurboV EVO
• EPU
• DIGI+ VRM
• Fan Xpert 2+
• EZ Update
• ASUS CPU-Z
• Norton 360 Deluxe – 60-day free trial
• WinRAR

UEFI BIOS

• ASUS CrashFree BIOS 3
• ASUS EZ Flash 3
• ASUS UEFI BIOS EZ Mode

Technical Specifications

Specification	Details
Model	ASUS PRIME B550M-K ARGB
Series	ASUS PRIME
Socket	AMD AM4
CPU Support	Ryzen 5000 / 5000 G-Series / 4000 G-Series / 3000 Series
Chipset	AMD B550
Form Factor	Micro-ATX
Dimensions	24.4 × 22.1 cm / 9.6 × 8.7 in
Memory Type	DDR4
Memory Slots	2 × DIMM
Maximum Memory	64GB
Maximum Memory Speed	Up to DDR4-5100 (OC)
Memory Architecture	Dual Channel
PCIe x16	1 × PCIe 4.0 x16
Additional PCIe	1 × PCIe 3.0 x1
M.2 Slots	2
M.2 Interface	PCIe 4.0 x4 / PCIe 3.0 x4 / SATA
SATA	4 × SATA 6 Gb/s
LAN	Realtek 1 Gb Ethernet
Wi-Fi	Not included
Bluetooth	Not included
Rear USB	6 ports
Front USB	7 ports
Video Output	DisplayPort + HDMI
Audio Codec	Realtek 7.1-channel HD Audio
Audio Resolution	Up to 24-bit/192 kHz
RGB	Aura Sync / Addressable Gen 2
BIOS	128 MB UEFI AMI BIOS
Operating System	Windows 11 / Windows 10 64-bit

Back Panel I/O

• 4 × USB 3.2 Gen 1 5 Gbps Type-A
• 2 × USB 2.0 Type-A
• 1 × DisplayPort
• 1 × HDMI
• 1 × Realtek 1 Gb Ethernet
• 3 × audio jacks
• 1 × PS/2 keyboard/mouse combo port

Internal I/O

Fan & Cooling

• 1 × 4-pin CPU fan header
• 2 × 4-pin chassis fan headers

Power

• 1 × 24-pin main power connector
• 1 × 8-pin +12V power connector

Storage

• 2 × M.2 Key M slots
• 4 × SATA 6Gb/s ports

USB

• 1 × USB 3.2 Gen 1 5Gbps Type-C connector
• 1 × USB 3.2 Gen 1 5Gbps header supporting 2 additional ports
• 2 × USB 2.0 headers supporting 4 additional ports

Miscellaneous

• 3 × Addressable Gen 2 headers
• Clear CMOS header
• COM port header
• Front Panel Audio header
• S/PDIF Out header
• Speaker header
• SPI TPM header
• System Panel header

Ideal For

• AMD Ryzen gaming PCs
• Budget gaming builds
• Home and office PCs
• Everyday desktop computers
• Compact micro-ATX builds
• Entry-level creator systems
• Ryzen 5000 systems
• Ryzen 5000G systems
• Home-office workstations
• Small-form-factor desktop builds
• Budget-friendly upgrade systems

Why Choose ASUS PRIME B550M-K ARGB?

The ASUS PRIME B550M-K ARGB is a practical choice for users building a compact AMD Ryzen PC without paying for unnecessary premium features. Its combination of the B550 chipset, AM4 compatibility, DDR4 memory, PCIe 4.0, dual M.2 slots, four SATA ports, Realtek 1Gb Ethernet, USB 3.2 Gen 1, DisplayPort, HDMI, and Aura Sync RGB provides a well-rounded feature set for gaming, productivity, and everyday computing.

Its micro-ATX form factor makes it easy to integrate into compact PC cases, while support for Ryzen 5000 Series processors and PCIe 4.0 storage gives the platform plenty of performance for modern budget and mid-range systems.

Buy the ASUS PRIME B550M-K ARGB Motherboard from Mustafa Computers—Authorized ASUS Reseller in Pakistan.

Get 100% genuine ASUS products, competitive pricing, warranty support, professional pre-sales and after-sales assistance, and nationwide delivery across Pakistan.

Build a reliable AMD Ryzen system with the PRIME B550M-K ARGB and take advantage of AM4 Ryzen processor support, DDR4 memory, PCIe 4.0, dual M.2 storage, USB 3.2 Gen 1, and Aura Sync RGB lighting.