| Model | ASUS A31 Case | |
| Case Size | Mid Tower | |
| Motherboard Support | Micro-ATX | |
| Mini-ITX | ||
| BTF motherboard compatible | ||
| Drive Bays | 2 x 2.5″/3.5″ Combo Bay | |
| Expansion Slots | 7 | |
| Front I/O Port | 1 x headphone / Microphone | |
| 2 x USB 3.2 Gen1 | ||
| 1 x USB 3.2 Gen 2×2 Type C | ||
| Tempered Glass | Front Side | |
| Left Side | ||
| Radiator Support (Top) | 120 mm | |
| 140 mm | ||
| 240 mm | ||
| 280 mm | ||
| 360 mm | ||
| Radiator Support (Rear) | 120 mm | |
| Cooling Support (Top) | 3 x 120 mm | |
| 2 x 140 mm | ||
| Cooling Support (Rear) | 1 x 120 mm | |
| 1 x 140 mm | ||
| Maximum CPU Cooler Height | 165 mm | |
| Maximum GPU Length | 380 mm | |
| Maximum PSU Length | 200 mm | |
| Removable Dust Filters | Top | |
| Bottom | ||
| Maximum Cable Management Space | 34 mm | |
| Dimensions | 238 x 511 x 435 mm | |
| Weight | 8.2 Kg | |
| BTF motherboard compatible | Yes |
