| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Part Number/Catalog No. | 1756-A4 |
| Series | ControlLogix |
| Slots | 4 |
| Module Type | Chassis |
| No. of Slots | Four (4) |
| Power Dissipation (Max) | 4 Watts |
| Mounting | Horizontal |
| Dimensions | 20 x 20 x 8 inches |
| Weight | 1.7 pounds (0.75 kilograms) |
| Enclosure | Open |
| Backplane Current (5 Volts DC) | 10 amps |
| Backplane Current (24 Volts DC) | 2.8 Amps |
| Available Series | Series A, B, C |