Compaq Presario 600 Series

| Jumper | Function | Pins | Function |
| P5,P6 | On-board Video Select | 1,2* No Jumpers | Enabled Disabled |
| P7 | Processor Select | 1,2 2,3 No Header | Nonsocketed Enabled Nonsocketed Disabled Socketed |
| P8 | Processor Speed Select | 1,2 2,3 | 33-MHz Processor Bus 25-MHz Processor Bus |
| P9 ** | Processor Configuration | 1,2
2,3 | 486DX/DX2 486SX (nonsocketed) 487SX/OD 486SX2 486SX (socketed) |
| P10 ** | Processor Configuration | 1,2
2,3 | 486SX (nonsocketed) 486SX (socketed) 486DX/DX2 487SX/OD 486SX2 |
| P11 *** | Processor Configuration | 1,2
2,3 3,4 | 486DX/DX2 486SX2 487SX/OD 486SX (nonsocketed) 486SX (socketed) |
| P13 | Configuration Resistors of Super I/O Chip | 1,2* No Jumper | 26Eh/26Fh 398h/399h |
| P14 | Clear CMOS | 1,2 | Remove jumper for 10 seconds to clear setup |
* Default.
** Headers not installed on 486/33 models. Headers not installed on 486/50 and 486/66 models. Configuration set by 0-ohm resistors.
***Headers not installed on 486/50 and 486/66 models. Configuration set by 0-ohm resistors.
|