| Brand | Thermaltake |
| Model | VERSA J21 |
| LED | - |
| Series | Versa |
| Form Factor | Mid Tower |
| 5.25” Bays | NA |
| 3.5” Bays | 2 |
| 2.5” Bays | 6 |
| Expansion Slots | 7 |
| Max Radiator Support | 360 |
| Max Fan Support | 6 |
| Color | Black |
| Side Panel | Tempered Glass |
| P/N | CA-1K1-00M1WN-00 |
| Dimensions | 465 x 205 x 447 mm (18.3 x 8.1 x 17.5 inch) (H x W x D) |
| Net Weight | 6.08 kg / 13.4 lb |
| Material | SPCC |
| Cooling System | Rear (exhaust) : 120 x 120 x 25 mm fan (1000rpm, 16dBA) |
| Supported Motherboards | 6.7” x 6.7” (Mini ITX), 9.6” x 9.6” (Micro ATX), 12” x 9.6” (ATX) |
| Front Panel I/O | USB 3.0 x 2, USB 2.0 x 2, HD Audio x 1 |
| Psu | Standard PS2 PSU (optional) |
| Fan Support | Front: 3 x 120mm, 2 x 140mm Top: 2 x 120mm, 2 x 140mm Rear: 1 x 120mm |
| Radiator Support | Front: 1 x 360mm, 1 x 280mm Top: 1 x 240mm Rear: 1 x 120mm |
| Max GPU Length | 310mm |
| Max CPU Cooler Height | 160mm |
| Max PSU Length | 220mm |
| Warranty | 3 Years |
| Country Of Origin | China |