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