ASUS Prime B550M-K ARGB Intel Chipset

AMD B550 (Ryzen™ AM4) mATX motherboard with dual M.2 slots, PCIe 4.0, Realtek 1Gb Ethernet, DisplayPort/HDMI™, SATA 6 Gbps, rear USB 3.2 Gen 1 ports, front USB 3.2 Gen 1 Type-C® and Aura Sync

• Ready for Advanced AI PC: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
• 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

ASUS PRIME series is expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series 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. This platform delivers the power and connectivity that advanced AI PC applications demand.

Tech Specs

Model

• PRIME B550M-K ARGB

CPU

• AMD Socket AM4 for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors*

Chipset

• AMD B550 Chipset

Memory

• 2 x DIMM slots, Max. 64GB, DDR4
• 5100(OC)/4866(OC)/4600(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000(OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/3400(OC)/3333(OC)/3200/3000/2933/2800/2666/2400/2133, Un-buffered Memory*
• Dual Channel Memory Architecture
  * ECC memory (ECC mode) support varies by CPU.
  * Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration.

Graphics

• 1 x DisplayPort**
• 1 x HDMI™ port***
  * Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications.
  ** Supports max. 4K@60Hz as specified in DisplayPort 1.4.
  *** Supports 4K@60Hz as specified in HDMI 2.1.

Expansion Slots

AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors

• 1 x PCIe 4.0 x16 slot (supports x16 mode)

AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors

• 1 x PCIe 3.0 x16 slot (supports x16 mode)

AMD B550 Chipset

• 1 x PCIe 3.0 x1 slot

Storage

Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports*
AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors

• M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 & SATA modes)

AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors

• M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes)

AMD B550 Chipset

• M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)
  4 x SATA 6Gb/s ports
  * AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1/10.

Ethernet

• 1 x Realtek 1Gb Ethernet

USB

Rear USB (Total 6 ports)

• 4 x USB 3.2 Gen 1 (5G) ports (4 x Type-A)
• 2 x USB 2.0 ports (2 x Type-A)

Front USB (Total 7 ports)

• 1 x USB 3.2 Gen 1 (5G) connector (supports USB Type-C®)
• 1 x USB 3.2 Gen 1 (5G) header supports 2 additional USB 3.2 Gen 1 ports
• 2 x USB 2.0 headers support 4 additional USB 2.0 ports

Audio

Realtek 7.1 Surround Sound High Definition Audio CODEC*

• Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
• Supports up to 24-Bit/192 kHz playback

Audio Features

• Audio Shielding
• Premium audio capacitors
• Dedicated audio PCB layers
  * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.

Back Panel I/O Ports

• 4 x USB 3.2 Gen 1 (5G) ports (4 x Type-A)
• 2 x USB 2.0 ports (2 x Type-A)
• 1 x DisplayPort
• 1 x HDMI™ port
• 1 x Realtek 1Gb Ethernet port
• 3 x Audio jacks
• 1 x PS/2 Keyboard/Mouse combo port

Internal I/O Connectors

Fan and Cooling related

• 1 x 4-pin CPU Fan header
• 2 x 4-pin Chassis Fan headers

Power related

• 1 x 24-pin Main Power connector
• 1 x 8-pin +12V Power connector

Storage related

• 2 x M.2 slots (Key M)
• 4 x SATA 6Gb/s ports

USB

• 1 x USB 3.2 Gen 1 (5G) connector (supports USB Type-C® )
• 1 x USB 3.2 Gen 1 (5G) header supports 2 additional USB 3.2 Gen 1 ports
• 2 x USB 2.0 headers support 4 additional USB 2.0 ports

Miscellaneous

• 3 x Addressable Gen 2 headers
• 1 x Clear CMOS header
• 1 x COM Port header
• 1 x Front Panel Audio header (AAFP)
• 1 x S/PDIF Out header
• 1 x Speaker header
• 1 x SPI TPM header (14-1 pin)
• 1 x 10-1 pin System Panel header

Special Features

ASUS 5X PROTECTION III

• DIGI+ VRM
• LANGuard
• Overvoltage Protection
• SafeSlot Core
• Stainless-Steel Back I/O

ASUS Q-Design

• Q-DIMM
• Q-LED Core
• Q-Slot

ASUS Thermal Solution

• Aluminum heatsink design

Aura Sync

• Addressable Gen 2 headers

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 Days Free Trial)
• WinRAR
• UEFI BIOS
• ASUS EZ DIY
  ASUS CrashFree BIOS 3
  ASUS EZ Flash 3
  ASUS UEFI BIOS EZ Mode

BIOS

• 128 Mb Flash ROM, UEFI AMI BIOS

Manageability

• WOL by PME, PXE

Accessories

Cables

• 2 x SATA 6Gb/s cables

Miscellaneous

• 1 x I/O Shield
• 1 x Screw package for M.2 SSD

Documentation

• 1 x User guide

Operating System

• Windows® 11, Windows® 10 64-bit

Form Factor

micro-ATX Form Factor

• 9.6 inch x 8.7 inch ( 24.4 cm x 22.1 cm )