L3 | USB rear port choke (2nd) |
L4 | USB rear port choke (3rd) |
L5 | USB front port choke (2nd) |
P1 | P/S connector (20 or 24 pin) |
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P2 | Second P/S connector (as required) |
P3 | Processor 12V header |
P4 | Secondary Processor 12V header |
P5 | Main Power/HDD LED connector |
P6 | Speaker connector |
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P7 | Analog audio connector (from |
P8 | Primary chassis fan header or primary CPU heatsink fan |
P9 | Secondary chassis fan header |
P10 | Diskette drive connector |
P11 | Auxiliary Audio connector |
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P12 | Alert on LAN connector |
P13 | VRM module footprint |
P15 | AUI connector |
P16 | Fan command/fan sink header (may be 2 or 4 pin) |
P17 | Digital audio expansion header |
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P18 | SPDIF internal input header |
P19 | SPDIF internal output header |
P20 | Primary IDE connector |
P21 | Secondary IDE/MultiBay connector |
P22 | Header for NEWCARD |
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P23 | Header for front panel audio |
P24 | Header for front panel USB |
P25 | Internal USB connector 1 |
P26 | Internal USB connector 2 |
P27 | MultiBay header |
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P29 | SCSI LED connector |
P30 | PCI extender slot (female) |
P40 | Blade PC graphics connector (outboard) |
P41 | Blade PC graphics connector (inboard) |
P52 | Second serial port |
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94 Appendix D System Board and Riser Board Reference Designators