PrologyParts Index

ASUS PRIME B550M-K

Desktop Motherboard - AMD B550 Chipset - Socket AM4 - Micro ATX - 128 GB DDR4

MPNPRIME B550M-KASUSDesktop memoryUpdated

Key facts

Part number
PRIME B550M-K
Brand
ASUS
Category
Desktop memory
Price
AUD 199≈ USD 139 Reference price (RRP)
Availability
On request — ask for a quote

Overview

Asus Prime B550M-K Desktop Motherboard - AMD B550 Chipset - Socket AM4 - Micro ATX - 128 GB DDR4 SDRAM Maximum RAM - DIMM, UDIMM - 4 x Memory Slots - Gigabit Ethernet - Yes - 4 x SATA Interfaces

AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A

  • AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ processors
  • Comprehensive cooling: PCH heatsink and Fan Xpert 2+
  • Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A
  • 5X Protection III: Multiple hardware safeguards for all-around system protection

PRIME

ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation 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.

Tune It Your Way

Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work - maximizing your productivity.

Cooler by Design

Prime B550M-K is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS, ensuring your rig stays cool and stable under intense workloads.

  • Multiple Temperature Sources
  • Smart Protection
  • 4-Pin PWM/DC Fan

Each header can dynamically reference three thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.

Build on a Solid Foundation

Prime B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options.

PCIe 4.0 M.2 (up to 64 Gbps)

Achieve speed with onboard M.2

PCIe 4.0 M.2 Slot supports up to 22110 and provide NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on the 3rd Generation AMD Ryzen platform.

Little Things Make a Big Difference

Prime B550 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive interface that let you customize your system to create a uniquely personal look.

Outstanding Audio

Combined onboard features deliver elevated audio

Intelligent design and premium hardware create audio quality unlike anything you've ever experienced.

Audio Shielding

Separates analog/digital signal domains, significantly reducing multi-lateral interference.

Separate Layer for Left and Right Tracks

Ensures minimal crosstalk between audio paths.

Premium Japanese Capacitors

Premium parts provide an immersive sound signature, with exceptional fidelity.

  • Retrieve a significant number of PCI slots, expansion slots, and peripheral ports that have an enhanced heat dissipation capability with the Micro ATX desktop motherboard
  • HDMI interface connects the top of the line PCs, Blu-ray players, and cutting edge Gaming Controllers
  • DDR4 SDRAM compatible slot - Installs memory that reduces processor's idle time and enhances computer's performance
  • RAID supported levels provide data reliability and fault tolerance
  • Compatible Ryzen 3 processor lets you perform all your computational tasks at a swift pace

Specifications

General

Audio Channels
7.1
Gigabit Ethernet
Yes
Onboard Video
CPU Dependent Video
Controller Type
Serial ATA/600
RAID Supported
Yes
Form Factor
Micro ATX
Width
243.8 mm
Depth
243.8 mm
Number of PCI Express x1 Slots
2
Number of PCI Express x16 Slots
1
Total Number of PCI Express Slots
3
Total Number of Expansion Slots
3.0
Maximum Memory Supported
128 GB
Number of Memory Slots
4
Memory Form Factor
DIMM

UDIMM

Processor Supported
Ryzen 9 PRO

Ryzen 7

Total Processor Supported
1
Chipset Manufacturer
AMD
Package Contents
Prime B550M-K Desktop Motherboard User's Manual I/O Shield 2 x SATA 6Gb/s cable(s) 1 x Supporting DVD 1 x M.2 SSD screw package(s)
Environmentally Friendly
Yes
Brand Compatibility
AMD
Environmental Compliance
Restriction of Hazardous Substances (RoHS)
HDMI
Yes
DVI
Yes
VGA
Yes
Number of Network (RJ-45) Ports
1
Total Number of USB Ports
6
Number of USB 3.2 Ports
6
Number of SATA Interfaces
4
Total Number of Onboard USB Ports
6
Number of Onboard USB 2.0 Ports
4
Onboard S/PDIF Header
Yes
Number of M.2 Interfaces
2
Number of Onboard USB 3.2 Ports
2
Product Type
Desktop Motherboard

Manufacturer Website Address

Manufacturer
ASUS Computer International
Product Model
B550M-K
Product Name
Prime B550M-K Desktop Motherboard
Product Line
Prime
Brand Name
Asus

Reference price history

Recorded reference and list prices over time. Not Prology selling prices.

Latest
AUD 199≈ USD 139
Oct 2026
Lowest recorded
AUD 199≈ USD 139
Highest recorded
AUD 199≈ USD 139
Recorded
2026
1 price point

AUD 199 rrp, recorded

Buy or sell ASUS PRIME B550M-K

Buying ASUS desktop memory

Looking to buy the ASUS PRIME B550M-K or a compatible desktop memory? Prology supplies new, refurbished and used ASUS desktop memory in Australia and the United States. Send the part number and quantity for a firm price.

Selling ASUS desktop memory

Have a spare or decommissioned PRIME B550M-K? Prology buys used and surplus ASUS desktop memory — single units or whole lots — and replies with an offer within 1 business day. Sell your PRIME B550M-K.

What is the ASUS PRIME B550M-K?
The ASUS PRIME B550M-K is a ASUS desktop memory – Desktop Motherboard - AMD B550 Chipset - Socket AM4 - Micro ATX - 128 GB DDR4 SDRAM.
How much does the ASUS PRIME B550M-K cost?
The reference price on record is AUD 199 (Oct 2026). It is a reference figure, not a selling price — ask Prology for a firm quote.
Where can I buy the ASUS PRIME B550M-K?
It is not listed on the Prology store yet. Prology sources ASUS desktop memory on request — request a quote and we reply with a firm price and lead time within 1 business day.
Can I sell a used ASUS PRIME B550M-K?
Yes. Prology buys used and surplus ASUS desktop memory, including the PRIME B550M-K. Get an offer — sell outright or trade in against your next order.

Request a quote for PRIME B550M-K

Tell us the quantity and condition you need. Prology replies with a firm price and lead time within 1 business day.

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