The ASUS A21 PLUS microATX case offers support for hidden-connector motherboards, 360 mm radiators and 380 mm graphics cards, with two color options, four pre-installed ARGB fans and clean cable management.
  • Hidden Connectors: Compatible with motherboards featuring hidden connectors and maximizes clean cable management for a clutter-free build.
  • Broad Compatibility: A21 PLUS supports up to 360 mm radiators, graphics cards up to 380 mm in length and CPU air coolers up to 165 mm in height.
  • Capable Cooling: A21 PLUS features four ARGB fans for exceptional cooling, and the front-panel mesh is 40% porous to maximize the balance of airflow, dust filtering and RGB visibility.
  • Ample cable management: The A21 PLUS provides a compartment behind the motherboard that is 33 mm wide to keep your wiring tucked away and tidy.
ASUS A21 PLUS Case
AP201 Compact Space, Powerful Performance

ASUS

AP201

Discover Hidden Potential


The ASUS A21 PLUS is a PC case crafted for minimalist mainstream DIY PC builders, with support for a variety of AIO coolers and graphics cards, and the four pre-installed ARGB fans provide plenty of airflow potential to keep things running smoothly.

Hidden Connectors

In addition to supporting conventional mini-ITX and micro-ATX motherboards, the A21 PLUS is also compatible with the TUF GAMING B760M-BTF WIFI D4, whose innovative connectors and headers are located on the underside to maximize clean cable management.


Click here to explore our BTF ecosystem lineup

Hidden connector motherboard installed in the ASUS A21 PC case Highlights on the hidden power connector on the back of the motherboard

Broad Compatibility

Despite being a micro-ATX case, the A21 PLUS still supports up to 360 mm radiators, graphics cards up to 380 mm in length and CPU air coolers up to 165 mm in height, giving builders plenty of options to assemble their next PC.

ASUS A21 PC build glass side panel of the ASUS A21 PC case

Support

  • 360 mm all-in-one cooler icon

    360mm

    Radiator

  • ROG Strix RTX 40 series graphics card icon

    380mm

    Graphics Card Length

  • Tower CPU Cooler icon

    165mm

    CPU Cooler Height

Capable Cooling

The front-panel mesh of the A21 PLUS is 40% porous to maximize the balance of airflow and RGB visibility. Within, four pre-installed ARGB fans ensure ample cooling.

Front angle of the ASUS A21 PC build featuring three 120 mm fans

40 % porosity

Ample Cable Management

The A21 PLUS provides a compartment behind the motherboard that is 33 mm wide to help you keep your wiring tucked away and tidy.

Rear side of the ASUS A21 PC Case without side panel highlight on the 33 mm wide cable management space of ASUS A21 PC Case

Color-Coordinated Builds

Both variants of the A21 PLUS come with color-coordinated black or white internal I/O cables to compliment your build theme.

One black ASUS A21 PC build and one white ASUS A21 PC build
Rear side of ASUS A21 PC Case and its color-matched cables
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