| Function | Jumper | Description |
|---|---|---|
| Serial Port (J7) | 1-2 Closed 1-2 Open 3-4 Closed 3-4 Open | COM1 Enabled COM1 Disabled COM2 Enabled COM2 Disabled |
| Parallel Port IRQ (J11) | 1-2 2-3 | IRQ 5 IRQ 7 |
| Display Mode (J12) | CLOSED OPEN | Colour Monochrome |
| RAM Operation Mode (J14, J15) | 1-2, 1-2 2-3, 1-2 1-2, 2-3 2-3, 2-3 | 100ns Fast Mode (4 page) 0ws 100ns Fast Mode (1 page) 0ws 100ns 1ws 120ns 2ws |
| Floppy Controller (J19) | CLOSED OPEN | Enabled Disabled |
| IDE Controller (J20) | CLOSED OPEN | Enabled Disabled |
| Parallel Port (J21) | 1-2 2-3 | LPT1 LPT2 |
| PS/2 Mouse Port | CLOSED OPEN | Enabled Disabled |