Deskpro Personal Computers Service Reference Guide

G-2
System Board and Riser Board Reference Designators
Reference Designators
Continued
Designator Component
J74 Line-out jack
J75 Headphone jack
J76 Volume control
J77 Double-stacked headphone/microphone connector
Top Microphone
Bottom Headphone
J78 Double-stacked line-in/line-out connector
Top Line in
Bottom Line out
P1 P/S connector
P2 Second P/S connector (as required)
P3 Third P/S connector (as required)
P5 Main Power HDD LED connector
P6 Speaker connector
P7 Audio connector (from CD-ROM
P8 Second fan connector
P9 WOL connector (NIC cable)
P10 Diskette drive connector
P11 Second Audio connector
P15 AUI connector
P20 Primary IDE connector
P21 Secondary IDE connector
P22 CD-ROM connector
P25 - P26 Video memory upgrade connector
P30 Primary SCSI connector
P31 Secondary SCSI connector
P53 First serial port
P54 Second serial port
P70 Processor fan header
P89 Floating Serial Port Connector
P100 ITP connector
SW50 Clear CMOS switch
XMM1 Memory slot. The first slot populated (DIMM1 or RIMM1) and tested.
XMM2 - XMM5 Following memory slots
XU1 Primary processor socket
XU2 Secondary processor socket
XU15 ROM socket