HP xw4550 Service And Technical Reference Manual page 156

Designator
P23
P24
P52
P60-63
P70
P124
P125
P150
SW50
XBT1
XU1
148 Appendix B Appendix B—System board designators
Silkscreen
FRONT AUDIO
FRONT USB
COM2
SATA0, SATA1, SATA2, SATA3
CPU_FAN
Hood Lock
Hood Sense
INTERNAL USB
CMOS (Push slider to clear)
BATTERY
CPU
Component
Front audio connector
Front USB Connector
Internal serial connector
SATA Connector ports
processor fan connector
Internal Hood Lock Connector
Internal Hood Sense Connector
Internal USB Connector
Clear CMOS slider switch SW50
Battery socket connector
Processor chip
ENWW