ASUS A21 Mid-Tower Case (Black)
Overview :
Lay the foundation for your next small form factor build using the black ASUS A21 Mid-Tower Case. With support for micro-ATX and mini-ITX motherboards, this case takes up less space on your desk without sacrificing powerful compatibility, making it perfect for those who game in compact spaces.
Featuring a steel frame and tempered glass side panel, the A21 case features five expansion slots, a 2.5″ drive bay, and two drive bays that fit either 2.5 or 3.5″ drive bays for future additions and storage expansion.
Connectivity
Two USB-A 3.2 Gen 1 ports can be used for peripherals like a mouse and keyboard. The input and output 3.5mm audio jacks allow you to connect headphones and a microphone to your system.
Fan and Radiator Support
To cool your system, this case supports up to three 120mm or two 140mm fans in the front and top panels and a single 120mm fan in the back. For water cooling, radiators up to 360mm can fit in the front or top while the rear can hold a 120mm radiator.
Component Support
This case fits GPUs up to 380mm long, PSUs up to 210mm long, and CPU coolers up to 165mm in height. BTF hidden-connector motherboards are also compatible with this case, and with the 3mm-wide rear compartment, you can maximize clean cable management.
Specification :
| Motherboard Support | Micro-ATX, Mini-ITX |
| Internal Drive Bays | 2x 2.5/3.5″ |
| and | |
| 1x 2.5″ | |
| Expansion Slots | 5x Full Height |
| Maximum GPU Length | 15.0″ / 380 mm |
| CPU Cooler Height | 6.5″ / 165 mm |
| Fans Included | No |
| I/O | 2x USB-A (USB 3.0 / 3.1/3.2 Gen 1) |
| Windowed Panel | Yes |
| Built-In Lighting | No |
| Tool-Less Design | Yes |
| Compatibility | |
| Motherboard Support | Micro-ATX, Mini-ITX |
| External Drive Bays | No |
| Internal Drive Bays | 2x 2.5/3.5″ |
| and | |
| 1x 2.5″ | |
| Expansion Slots | 5x Full Height |
| Maximum GPU Length | 15.0″ / 380 mm |
| CPU Cooler Height | 6.5″ / 165 mm |
| Supported PSU Size | ATX |
| Maximum PSU Length | 8.3″ / 210 mm |
| PSU Mounting Location | Bottom |
| Cooling | |
| Fan Mounting | Front |
| 3x 120 mm | |
| or | |
| 2x 140 mm | |
| Top | |
| 3x 120 mm | |
| or | |
| 2x 140 mm | |
| Rear | |
| 1x 120 mm | |
| Fans Included | No |
| Maximum Radiator Size | Front, Top: |
| 360 mm | |
| Rear: | |
| 120 mm | |
| Fan Controller Included | No |
| Inputs / Outputs | |
| I/O | 2x USB-A (USB 3.0 / 3.1/3.2 Gen 1) |
| Media/Memory Card Slot | No |
| Audio I/O | 1x 3.5 mm Input |
| 1x 3.5 mm Output | |
| Display Outputs | No |
| Physical | |
| Windowed Panel | Yes |
| Color | Black |
| Material | Plastic, Steel, Tempered Glass |
| Built-In Lighting | No |
| Tool-Less Design | Yes |
| Cable Management Space | 1.3″ / 33 mm |
| Dimensions (W x H x D) | 8.7 x 16.9 x 18.3″ / 220 x 430 x 465 mm |
| Weight | 16.1 lb / 7.3 kg |
| Packaging Info | |
| Package Weight | 19.085 lb |
| Box Dimensions (LxWxH) | 20.7 x 19.5 x 12.8″ |