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ASUS PRIME B450M-K II micro ATX motherboard in black with AM4 socket and DDR4 slots

ASUS

ASUS PRIME B450M-K II AMD B450 DDR4 32GB Micro ATX Motherboard

SKU CH-WS5P-ACMDE

Micro-ATX AM4 motherboard with B450 chipset supporting up to 32GB DDR4 memory

  • CPU socketSocket AM4
  • ChipsetAMD B450
  • Max supported RAM32 GB
  • Socket AM4 fits compatible AMD processors
  • AMD B450 chipset delivers core platform features
  • DDR4 memory support up to 32GB capacity
  • Micro ATX form factor suits compact builds
  • Includes SATA cable and I/O back panel

Socket AM4 foundation

The ASUS PRIME B450M-K II is a Micro ATX motherboard built around the AMD B450 chipset and the Socket AM4 platform. It accepts DDR4 memory up to a maximum of 32 GB and fits compact chassis where a full-size ATX board would not. The package includes the board, a CMOS battery, one SATA cable and an I/O back panel.

Steady operation under load

With the B450 chipset and a Micro ATX layout, the board delivers consistent throughput for everyday workloads and extended sessions rather than only brief bursts. The included SATA cable supports storage connections that sustain data movement without the thermal spikes seen on smaller form-factor alternatives. A 100 % inspection before shipping confirms baseline stability.

32 GB DDR4 ceiling

The single specification that determines suitability is the 32 GB maximum memory capacity supported by this board. If a build requires more than 32 GB of DDR4, this model cannot meet that requirement. For systems staying at or below that limit, the Socket AM4 interface and B450 chipset provide a compatible foundation.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $82.99
Cheaper than about 82% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Product lineASUS PRIME B450M-K II
Model nameASUS PRIME B450M-K II
Processor
CPU socketSocket AM4
ChipsetAMD B450
Memory
Max supported RAM32 GB

Questions about this item

Does the ASUS PRIME B450M-K II run hot or loud when the CPU is under load all day?

The motherboard itself has no active cooling; thermal output and fan noise come from the CPU and case fans you install.

What memory must I already own to populate the ASUS PRIME B450M-K II?

You need DDR4 modules; the board supports up to 32 GB total capacity.

Will my existing SATA drives connect directly to the ASUS PRIME B450M-K II?

Yes, the board provides SATA ports and the package includes one SATA cable for a drive.

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