System board callouts, ProDesk 400
Sys Bd Label
Color
Component
Sys Bd Label
Color
Component
DIMM3
Black
Secondary memory
socket
WLAN
Black
WLAN module socket
DIMM1
Black
Primary memory socket
BAT
Black
RTC battery
CPUFAN
White
Fan connector
PSWD
Black/blue Password header and
jumper
SPKR
White
Speaker connector
CMOS
Yellow
CMOS reset button
HSENSE
White
Hood sensor connector
SATA0
Blue
Hard drive data
connector
THERM
White
Thermal sensor
PROCESSOR
Black
Processor socket
SSD
Black
Solid-state module
socket
System board
53