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JUMPER
& SWITCH INFORMATION System Board Jumper Location
Click on a jumper designator to see its
function and a connector description:
See jumper
settings and power supply cable connections. |
Connector
information
| Function |
Description |
Reference Designator |
| Keyboard |
Miniature 6-pin |
J9b |
| Mouse |
Miniature 6-pin |
J9a |
| Parallel port |
DSUB 25-pin |
J3 |
| Serial |
DSUB 15-pin |
J23 |
| USB |
2 USB connectors |
J15 |
| Video |
15-pin VGA |
J20 |
| Game |
DSUB 15-pin |
J5D (stacked connectors) |
| DIMM sockets |
168-pin DIMM |
J18 (secondary), J19 (primary) |
| Button & headphone board |
9-pin 2mm connector (key 3) |
J27 |
| CPU core voltage select |
8-pin header |
J29 |
| Socket 7 |
321-pin PGA |
U24 |
| Processor DLL voltage |
3-pin header |
J30 |
| Internal speakers
(ES models) |
2-pin header |
J25 (L), J26 (R) |
| CMOS clear |
3-pin header |
J17 |
| Battery socket |
Battery holder |
BT1 |
| CD-ROM audio |
4-pin header, key 2 |
J4 |
| Socket 7 clock multiplier |
3x 3-pin headers |
CLK 0 - CLK 2 |
| CPU frequency select |
3x 3-pin headers |
FREQ 0 - FREQ 2 |
| Riser card slot |
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J16 |
| IDE drives |
40-pin headers, key 20 |
J10 (CD data & HD / primary)
J11 (Zip - if used / secondary) |
| Diskette drive |
34-pin header |
J2 |
| Power supply |
6-pin & 12-pin ATPWR headers |
J22, J21 |
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