Maintenance and Service Guide

System board callouts
Sys Bd Label Color Component Sys Bd Label Color Component
PWRCPU White 4-pin processor power PWR White 6-pin main power
PROCESSOR White Processor SATA PWR0 Black Drives
CPUFAN White Processor fan SD RDR Black Card reader
DIMM4 Black Memory module SATA2 Light blue Any SATA Device other
than primary hard drive
DIMM3 White Memory module SATA0 Dark blue Hard drive
DIMM2 Black Memory module PSWD Green Clear system passwords
DIMM1 White Memory module BATTERY Black RTC battery
HSENSE White Hood sensor CMOS Yellow Reset CMOS
SPKR White Speaker X16PCIEXP White Expansion card
WIRELESS Black WLAN module X1PCIEXP1 Black Expansion card
SSD1 Black M.2 solid-state drive COMM_DP Silver Option port
SATA1 Light blue Any SATA device other
than primary hard drive
COMA Black Optional second serial port
PWRCMD White Power supply
System board 55