D System Board and Riser Board
Reference Designators
These reference designators are used on most but not all HP system and riser boards.
Designator Component
BAT
CR1
CR2
CR3
CR4
Battery socket/Battery
LED - 5V_Aux (on)
Health-LED
UID LED
Power LED
CR35
E14
E15
E16
E25
E49/JP49
Hard drive activity LED
Boot block header/jumper
Boot block recovery header
ROM recovery header
CPLD programming header
Clear Password header/jumper
E50
J7
J9
J10
J11
Clear CMOS header
RJ45 jack
Stacked RJ45/Dual USB
Quad stacked USB
First IEEE 1394 connector
J12
J13
J14
J20 - 29
J30
Second IEEE 1394 connector
SPDIF input
SPDIF output
PCI slots
PCI extender slot (male)
J31 - J35
J37
PCI Express slots
Primary SCSI connector
92 Appendix D System Board and Riser Board Reference Designators
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