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Deal.ai › ASUS
ASUS
Asus PRIME B550M-K ARGB AM4 M-ATX Motherboard

Asus PRIME B550M-K ARGB AM4 M-ATX Motherboard

Best price now

$122.51at GUNMANSAChecked Nov 10

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Price facts

  • Last seen at $122.51 at GUNMANSA on Nov 10.

Our take on the Asus PRIME B550M-K ARGB AM4 M-ATX Motherboard

The Asus Prime B550M-K ARGB is a micro-ATX AM4 board for Ryzen 3000, 4000 G, 5000 and 5000 G chips. It covers the basics well: PCIe 4.0 for the graphics card, two M.2 slots, front USB-C, 1Gb Ethernet and Aura ARGB headers. It is a budget-minded board, so it skips Wi-Fi, has no rear USB-C and runs a modest VRM without heatsinks. Buyers who want a cheap, stable base for a mid-range Ryzen build like it; anyone planning a 16-core chip or heavy overclocking should look at a better-cooled board.

Best forBudget Ryzen 5000 gaming buildsMicro-ATX cases with limited spaceFirst-time DIY buildersOffice and general-purpose PCs
Pros
  • PCIe 4.0 x16 slot for the GPU
  • Two M.2 slots for fast storage
  • Front-panel USB-C header
  • Aura ARGB headers and lighting control
  • Fan Xpert 2+ with hybrid fan headers
  • Realtek 7.1 audio and 1Gb Ethernet
Cons
  • No Wi-Fi or Bluetooth built in
  • No rear USB-C port
  • VRM has no heatsinks, limiting high-core CPUs
  • Only two DIMM slots, so 64GB max
  • Modest rear I/O for the class

Asus PRIME B550M-K ARGB AM4 M-ATX Motherboard prices at every store

  • GUNMANSANew

    In stockShips from South Africa · priced in ZAR (ZAR 2,015.00) · duties may applyReturn policy

    $122.51Checked Nov 10
    Visit GUNMANSA

What reviewers say

Owners of budget Ryzen builds generally find it stable and easy to set up, with the ARGB headers and dual M.2 slots called out as good value. Criticism centers on the bare VRM, the lack of Wi-Fi and the thin rear I/O.

What people mention
  • VRM coolingCriticisedOwners say the uncooled VRM gets hot with 12- and 16-core chips and limits overclocking.
  • ConnectivityMixedFront USB-C and 1Gb Ethernet are welcome, but there is no Wi-Fi and no rear USB-C.
  • M.2 slotsPraisedTwo M.2 slots are seen as generous for a budget board.
  • SetupPraisedBuilders describe the BIOS and layout as straightforward for first-time builds.
  • Memory slotsMixedTwo DIMM slots keep things simple but cap capacity at 64GB.

About the Asus PRIME B550M-K ARGB AM4 M-ATX Motherboard

The ASUS PRIME B550M-K ARGB is an M-ATX motherboard with an AM4 socket and the B550 chipset. It supports AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series and 3000 Series desktop processors.

It has a PCIe 4.0 x16 slot, two M.2 slots and Realtek 1Gb Ethernet. USB 3.2 Gen 1 ports are on the rear and front panel, including a front Type-C connector. Realtek 7.1 Surround Sound High Definition Audio CODEC handles audio.

For cooling, it has a PCH heatsink, hybrid fan headers and Fan Xpert 2+. Onboard addressable Gen 2 headers support Aura Sync RGB lighting for RGB LED strips and Aura Sync-capable hardware.

Socket
AM4
Chipset
B550
Compatible CPUs
AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series, 3000 Series
Form factor
M-ATX
Memory type
DDR4, dual channel
Memory slots
2 DIMM slots, up to 64GB
Memory speed
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 MHz
Expansion slots
1 x PCIe 4.0 x16, 1 x PCIe 3.0 x1
Storage
2 x M.2, 4 x SATA 6Gb/s
RAID
0/1/10
Networking
Realtek 1Gb Ethernet
USB (front)
1 x USB 3.2 Gen 1 Type-C, 2 x USB 3.2 Gen 1 Type-A, 4 x USB 2.0
USB (rear)

Questions and answers

Does it support Ryzen 5000 out of the box?
It supports Ryzen 5000, 5000 G, 4000 G and 3000 series. Older stock may need a BIOS update, which on this board requires a supported CPU.
Does it have Wi-Fi?
No. Networking is a Realtek 1Gb Ethernet port only, so you need a Wi-Fi card or USB adapter for wireless.
How many M.2 drives can I install?
Two. The primary slot runs PCIe 4.0 with a Ryzen 5000 CPU; the second is PCIe 3.0.
Can it handle a Ryzen 9 5950X?
It will run, but the VRM has no heatsinks, so a 16-core chip is better paired with a board that has cooled power delivery.
Does it have USB-C?
There is a front-panel USB-C header for a case port, but no USB-C on the rear I/O.
What memory does it take?
Two DDR4 DIMM slots, up to 64GB, with support for high-speed kits via DOCP.
Where is the Asus PRIME B550M-K ARGB AM4 M-ATX Motherboard cheapest?
At GUNMANSA, for $122.51, as of our latest check.
4 x USB 3.2 Gen 1 Type-A, 2 x USB 2.0
Video output
1 x HDMI, 1 x DisplayPort
Audio
Realtek 7.1 Surround Sound High Definition Audio CODEC
Lighting
Aura Sync RGB, onboard addressable Gen 2 headers
Cooling
PCH heatsink, hybrid fan headers, Fan Xpert 2+
DirectX
12
OS support
Windows 10 64-bit, Windows 11 64-bit
In the box
Motherboard (black) x1, SATA cables x2, I/O shield x1, M.2 SSD screw package x1, user manual x1

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