NOTE: When replacing the system board, you must also change the chassis serial number in the BIOS.
IMPORTANT: When reconnecting the cables, be sure that they are positioned correctly.
System board callouts
Table 4-1 System board callouts
Item Sys Bd Label Component Item Sys Bd Label Component
1 ODD_PWR Optical drive power 11 SYS_FAN System fan
2 SATA2 Optical drive 12 PWRCPU Power supply
3 SATA0 Hard drive 13 PROCESSOR Processor socket
4 PWR Power supply 14 CPU_FAN Fan sink
5 PWRCMD Power supply 15 DIMM2 Memory module
6 SATA1 Hard drive 16 DIMM1 Memory module
7 CLR_CMOS/
PSWD
CMOS/password reset 17 SATA_POWER Drive power
8 PCIE_X16 Expansion card 18 M2_WIFI WLAN module
9 PCIE_X1 Expansion card 19 M2_2280 Solid-state drive (M.2)
10 COM HEADER Option board 20 BAT RTC battery
38 Chapter 4 Removal and replacement procedures
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