Presario 51XX (PII) System Board Connectors
Two tables are given below: the first is for a 66 MHz bus speed, the other for 100 MHz bus speed.
| Processor frequency required, MHz | |||||
| Jumper | 200* | 233* | 266 | 300 | 333 |
| JP1 | off | on | off | on | off |
| JP2 | on | on | off | off | on |
| JP3 | off | off | on | on | on |
| JP4 | off | off | off | off | off |
*Not shipped in these configurations |
|||||
For a 100 MHz bus speed:
| Processor frequency required, MHz | |||||
| Jumper | 300* | 350 | 400 | 450 | 500* |
| JP1 | off | on | off | on | off |
| JP2 | on | on | off | off | on |
| JP3 | off | off | on | on | on |
| JP4 | off | off | off | off | off |
*Not shipped in these configurations |
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| Connector information | ||
| Function | Description | Reference Designator |
| Keyboard | Miniature 6-pin | ½ J1 |
| Mouse | Miniature 6-pin | ½ J1 |
| Parallel port | DSUB 25-pin | J2 |
| Video | 15-pin VGA | J4 |
| Flat panel display | 20-pin | J100 |
| Ethernet jack | RJ45 | J10 |
| Microphone in | Mini stereo | ½ J6 |
| Speaker out | Mini stereo | ½ J5 |
| Line in | Mini stereo | ½ J6 |
| Line out | Mini stereo | ½ J5 |
| DIMM sockets | 168-pin DIMM | J17, J18, J19 |
| SODIMM socket | 144-pin SODIMM | J13 |
| PCI slots | 32-bit PCI connector | J15, J16 |
| ISA slots | 16-bit ISA connector | J8, J9 |
| Processor slot | Slot 1 connector | J14 |
| Slot 1 clock multiplier | 2-pin header | JP1 -- JP4 |
| Clear CMOS | 3-pin header | J22 |
| Serial port | DB9 | J7 |
| GamePort/USB | 24-pin 2mm connector | J29 |
| Sleep button & LEDs | 5-pin 2mm connector | J26 |
| Battery socket | 2-pin socket | BT1 |
| CD-ROM audio | 4-pin header, key 2 | J11 |
| IDE drives | 40-pin headers, key 20 | J23 (primary), J21 (secondary) |
| Diskette drive | 34-pin header | J30 |
| Headphone board | 5-pin 2mm connector | J31 |
| Internal speakers | 2-pin header | J27, J28 |
| Second fan | 4-pin header, key 2 | J24 |
| +3.3V power | 6-pin header | J20 |
| Power supply | 12-pin ATPWR header | J12 |