Designator
Silk screen
Component
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
244 Appendix B System board designators
ENWW