Eathtek Replacement AC DC-IN Power Jack Cable Harness for DELL STUDIO XPS 16 1640 1645 1647 series (Notes: Ours is 4 wires, can not used for 5 wires!) Notes: Ours is 4 wires, can not used for 5 wires! Compatible Model Numbers: DELL STUDIO XPS 16 1640 1645 1647 Replacement and high quality,Replace your faulty, cracked or broken dc power Each dc power is tested before shipping All pictures are taken from the real item, please check carefully before bidding.