| 1000648 | ISO-CNC-Machine | - | - |
| 1000884 | In/Out for Spectrum | - | - |
| 1000188 | Indescomp Domestic Controller | - | - |
| 1000500 | Input/Output Peripheral | - | - |
| 1000647 | Input/Output Port | - | - |
| 1000191 | Interface 007 | - | - |
| 1000194 | Interface III | - | - |
| 1001154 | Interface M/P | - | - |
| 1000753 | Interfaces KAP | - | - |
| 1000954 | JoyTape Player | - | - |
| 1000205 | Kappa Keyboard Interface | - | - |
| 1000215 | Kelwood Power Base | - | - |
| 1000216 | Kelwood Sound Base | - | - |
| 1000222 | Kempston PPI Port | - | - |
| 1001011 | Keyboard Stroke Kit | - | - |
| 1000227 | Konix Liberator | - | - |
| 1000593 | LMX-Port Board | - | - |
| 1000233 | Logitek Floppy/Printer Interface | - | - |
| 1000787 | MGT The Fixer | - | - |
| 1000247 | MGT Two Face | - | - |