| Configuration Jumpers | ||
| Jumper | Pins | Function |
| P7 | Replacement Battery Connector | |
| P8 Bus Speed Select |
1-2 | 50 MHz CPU External Bus Frequency |
| 2-3 | 60 MHz CPU External Bus Frequency | |
| 3-4 | 66 MHz CPU External Bus Frequency | |
| 4-5 | 55 MHz CPU External Bus Frequency (Reserved) | |
| P9 CPU Clock | A1-A2 B1-B2 |
× 1.5 |
| A2-A3 B1-B2 |
× 2.0 | |
| A2-A3 B2-B3 |
× 2.5 | |
| A1-A2 B2-B3 |
× 3.0 | |
| P11 CMOS Clear |
1-2* Open |
Secure CMOS Power Remove jumper for 10 seconds and reinstall to clear CMOS |
| *Default | ||
Compaq Presario 4400 Series System Board: External Connectors |
||
| Function | Description | Designator |
| Video | 15-Pin Header | J25 |
| Parallel | DSUB 25-Pin | J18 |
| Joystick\MIDI | DSUB 15-Pin 2 Row | J14 |
| USB Port | USB Connector | J11 |
| Keyboard | Miniature 6-Pin | 1/2 J6 |
| Mouse | Miniature 6-Pin | 1/2 J6 |
| Line In | Mini Stereo | 1/2 J5 |
| Microphone | Mini Stereo | 1/2 J5 |
| Line Out | Mini Stereo | 1/2 J2 |
| Headphone/Speaker Out | Mini Stereo | 1/2 J2 |
Compaq Presario 4400 Series System Board: Internal Connectors |
||
| Function | Description | Designator |
| Feature Connector | 26-Pin Header | J27 |
| CMOS | 2-Pin Header | P11 |
| SIMM Sockets | 72-Pin SIMM | J26, J24, J23, J22 |
| Clock Multiplier | 6-Pin Header | P9 |
| LPB/MPEG | 34-Pin Header | J17 |
| MPEG | 10-Pin Header | J20 |
| Video Memory Expansion | 30-Pin Small Header | J19, J16 |
| Clock Speed | 5-Pin Header | P8 |
| Riser Board | PCI/ISA Slot | J15 |
| Cache Socket | 160-Pin DIMM | J13 |
| Button/Light Board | 20-Pin Header | J9 |
| Internal Line In | 4-Pin Header, Key 2 | P6 |
| Wavetable Connector | 26-Pin Header, Key 7 | J7 |
| Internal Line In (CD Drive) | 4-Pin Header, Key 2 | P5 |
| MPEG Audio | 4-Pin Header, Key 2 | P3 |
| Power Supply | 12-Pin ATPWR Header | P1 |
| Replacement Battery | 4-Pin Header, Key 2 | P7 |
| Serial | 9-Pin Header | J8 |
| Primary IDE Drive (Hard Drive) | l 40 Pin Header, Key 20 | J1 |
| Secondary IDE Drive (CD Drive) | l 40 Pin Header, Key 20 | J3 |
| Diskette Drive | l 34-Pin Header | J4 |