ASUS A21 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.
EAN: 197105365100
ASUS A21 Specs
Key Specs
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" |
In the Box
- ASUS A21 Mid-Tower Case (Black)
- 2-Year Manufacturer Warranty
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