The cables, colors, and connections vary depending on the computer case and motherboard you have
Colors of system panel cables
Black or white
Colored
Colored wire
Powered wire
Front Panel Pins
Reserved for power switch connectors, reset switches, power LED and hard drive LED
System panel cables
Two wire cables that are color-coded to help identify where they connect to the motherboard system panel connector
HDD LED (IDE LED) - The LED activity light for the hard drive. This indicator is thelight that flashes as information is being written to and read from the hard drive.
PLED (Power LED) - The LED power light, which indicates when the computer is on, off, or in Standby.
PWRSW (Power SW) - Controls the power button that allows you to turn on and off the computer.
Reset SW - Handles the reset button to restart the computer.
