Specification:
| Specification | Details |
| Model Name | A4-H2O |
| Model Numbers | A4-H20 X3 (Black), A4-H20 X4 (Black), A4-H20 A3 (Silver), A4-H20 A4 (Silver) |
| Color | Anodized Black Exterior, Matte Black Interior (Black models) |
| Silver Exterior, Matte Black Interior (Silver models) | |
| Riser Cable Generation | PCIe 3.0 (X3, A3) |
| PCIe 4.0 (X4, A4) | |
| Dimensions | (D) 326mm x (W) 140mm x (H) 244mm |
| Capacity | 11L |
| Materials | Aluminum Exterior, SPCC Steel Interior |
| Motherboard Support | Mini-ITX |
| Fan Support | Top: 2x 120mm |
| Radiator Support | Top: 1x 240mm (55mm max total thickness with fans) |
| PSU Support | SFX, SFX-L |
| GPU Length Clearance | Max 322mm |
| CPU Cooler Clearance | Max 55mm |
| Drive Support | 1x 2.5” SSD |
| Expansion Slots | 3 |
| I/O Ports | 1x USB 3.0 TYPE-A, 1x USB 3.1 TYPE-C, 1x Mic, 1x HD Audio |
| Warranty | 1 year |