Designator Silk screen Component
P26 P26 FRONT USB3 Front panel USB3 header (blue)
P52 COMB Serial port header
P60-P62 SATA0-SATA2 SATA connectors
P63 SATA3 SATA/eSATA connector
P70 EXT STONE card connector
P124 P124 HOOD LOCK Side access panel solenoid lock header
P125 HSENSE Hood sensor connector (3 pin)
P129 TBT TBT connector (2x4-pin)
P150 Media int-Media connector (6-pin)
P152 Media USB 3.0 Media card reader
P160 SATA PWR0 SATA Power connector (2x3 pin)
SW50 SW50 CMOS Clear CMOS switch/push button
XBT1 XBT1 BAT Battery holder
XMM1 - XMM4 XMM1 - XMM4
DIMM1 - DIMM4
Memory slots
XU1 XU1 Primary CPU socket
94 Appendix C System board designators