System board callouts
Item Sys Bd Label Component Item Sys Bd Label Component
1 XU1 Processor socket 10 BAT RTC battery
2 CFAN2 Fan sink 11 HDD1 Hard drive
3 ATX1 Power supply, 4 pin 12 ODD1 Optical drive
4 DIMM1 Memory module 13 ATX2 Power supply
5 DIMM2 Memory module 14 ATX1 Power supply, 7 pin
6 SSD Solid-state drive (M.2) 15 SATA_POWER Drive power
7 PRB1 Power button 16 PCIEX1 Expansion card
8 WLAN1 WLAN (M.2) 17 PCIEX16 Expansion card
9 PSWD
SW_CMOS
CMOS/password reset
38 Chapter 4 Removal and replacement procedures