I replaced the motherboard without much problem ,however, I didn't take a picture before removing two wires. They are two wires incased in a white shealth that comes from the from of the unit . Its not the power supply or Hd led One wire a a green female connection the other wire has a black female connection. Emachine C6535 I believe the wires control the front audio or usb connections but not sure were on the mo this gets connected. The female connectors have 6 pins I think.