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)

 

 

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

 

 

P7

Analog audio connector (from CD-ROM)

P8

Primary chassis fan header or primary CPU heatsink fan

P9

Secondary chassis fan header

P10

Diskette drive connector

P11

Auxiliary Audio connector

 

 

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

 

 

P18

SPDIF internal input header

P19

SPDIF internal output header

P20

Primary IDE connector

P21

Secondary IDE/MultiBay connector

P22

Header for NEWCARD

 

 

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

 

 

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

 

 

94 Appendix D System Board and Riser Board Reference Designators