HP EliteDesk 800 G4 Maintenance and Service Guide - Page 72

System board callouts Sys Bd Label PWRCPU XU1 CPUFAN DIMM4 DIMM3 DIMM2 DIMM1 CMOS BAT WIRELESS SATA PWR SATA0 SATA2 SATA1 SD RDR Color Component White 4-pin processor power Silver Processor White Processor fan White Memory module Black Memory module White Memory module Black Memory module Yellow Reset CMOS Black RTC battery Black WLAN Black Drives Dark blue Hard drive Light blue Any SATA Device other than primary hard drive Light blue Any SATA Device other than primary hard drive Black Card reader Sys Bd Label SPKR SSD2 SSD1 PWR PWRCMD PSWD X4PCIEXP X1PCIEXP1 X1PCIEXP2 X16PCIEXP COMA HSENSE CHFAN2 Color White Black Black White White Green Black Black Black White Black White Brown HLCK Black COMM_DP Silver Component Speaker M.2 solid-state drive M.2 solid-state drive 6-pin main power Power supply Clear system passwords Expansion card Expansion card Expansion card Expansion card Optional second serial port Hood sensor Fan Hood lock Option port 64 Chapter 4 Removal and replacement procedures