The ASUS A21 PLUS is a compact and powerful micro‑ATX PC case that also supports Mini‑ITX motherboards. Built with a steel frame and a well-ventilated front mesh (40% porous), it ensures strong airflow while maintaining aesthetic appeal. The case comes with four pre-installed ARGB fans for efficient cooling, supports up to a 360 mm radiator, and can house graphics cards up to 380 mm in length. Cable management is made easy with a 33 mm compartment behind the motherboard tray, keeping your build neat and tidy.
Specifications
| Design |
| Maximum PSU length |
21 cm |
| Maximum graphics card length |
38 cm |
| Maximum CPU cooler height |
16.5 cm |
| Illumination colour |
Multi |
| Illumination |
Yes |
| Number of expansion slots |
5 |
| Number of 2.5" bays |
1 |
| Number of 3.5" bays |
1 |
| Number of 5.25" bays |
0 |
| Supported motherboard form factors |
micro ATX, Mini-ITX |
| Product colour |
Black |
| Type |
PC |
| Ports & interfaces |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity |
0 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity |
0 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity |
2 |
| USB 2.0 ports quantity |
0 |
| Cooling |
| Top radiator sizes supported |
120,140,240,280,360 mm |
| Rear radiator sizes supported |
120 mm |
| Front radiator sizes supported |
120,140,240,280,360 mm |
| Top fans diameters supported |
120,140 mm |
| Number of top fans supported (max) |
3 |
| Rear fans diameters supported |
120 mm |
| Number of rear fans supported (max) |
1 |
| Rear fans installed |
1x 120 mm |
| Front fans diameters supported |
120,140 mm |
| Number of front fans supported (max) |
3 |
| Front fans installed |
3x 120 mm |
| Storage |
| HDD/SSD combo cage |
Yes |
| Supported HDD sizes |
2.5,3.5" |
| Weight & dimensions |
| Weight |
8.1 kg |
| Height |
465 mm |
| Depth |
430 mm |
| Width |
220 mm |
| Packaging data |
| Package weight |
9.8 kg |
| Package height |
493 mm |
| Package depth |
288 mm |
| Package width |
525 mm |
