B System board designators
This appendix describes the system board designators for this computer.
Designator Silk screen Component/Description
E15 E15 Crisis recovery header/jumper
E49 E49 Clear password header/jumper
J9 J9 RJ/USB LAN/DUAL USB
J10 J10 QUAD USB Quad rear USB
J20 J20 PCI PCI slot (white)
J31 J31 PCIe x1 slot (black)
J41 J41 X16PCIEXP PCIe x16(16) slot (black)
J42 J42 X4PCIEXP PCIe x16(4) slot (white)
J53 VGA/COMA Serial port connector stacked over VGA port
J64 DP Display port connector
J68 PS2 Mouse connector stacked over keyboard
connector
J78 IN/OUT Audio line in stacked over audio line out
SW50 SW50 CMOS Clear CMOS switch/push button
P1 PWR Power supply, 6-pin (white)
P2 PWRCMD Power command, 6-pin (white)
P3 PWRCPU Power supply, 4-pin (white)
P5 P5 PB/LED Front power button/LED (black)
P6 SPRK Internal speaker (white)
P9 CHFAN1 Front chassis fan
P23 FRONT AUD Front audio (blue)
P24 FRONT USB Front I/O USB (yellow)
P25 FRONT USB2 Front I/O USB (green)
P52 COMB Serial port
P124 HLCK Hood lock solenoid (black)
P125 HSENSE Hood sensor
P126 PAR Flying parallel port (black)
P150 MEDIA Media card reader
188 Appendix B System board designators ENWW