Designator
Silk screen
Component
P26
P26 IUSB2
Internal dual USB header
P27
P27 IUSB1
Internal single USB header
P28
FRNT AUD
Front panel audio header
P29
P29 HDD LED
Hard drive LED connector
P53
P53
Serial port connector
P60-P63
P60-P63
SATA0-SATA3
SATA Connectors
P66-P67
P66-P67
SATA4-SATA5
SATA Connectors
P70
P70 CPU0 FAN
Primary CPU fan header
P71
P71 CPU1 FAN
Secondary CPU fan header
P80-P87
P80-P87
SAS0-SAS7
SAS/SATA connectors
P91
P91 MEM FANS
Memory fans connector
P93
P93 FRNT FAN1
Front fan header
P94
P94 FRNT FAN2
Front fan header
XBT
XBT BAT
Battery holder
XMM1 -XMM12
CPU0 - DIMM1 to CPU0 - DIMM6
CPU1 - DIMM1 to CPU1 - DIMM6
Memory slots
XU1
XU1 CPU0
Primary CPU socket
XU2
XU2 CPU1
Secondary CPU socket
282
Appendix B System board designators
ENWW