Abstract: A power jack connector for receiving a power plug connector has an insulating housing, a middle pin, a first shell surrounding a rear end of the insulating housing and a second shell having a supporting plate for covering the rear surface of the insulating housing and being connected with the first shell. The insulating housing defines a chamber passing through a front surface and a rear surface thereof for receiving the power plug connector. The middle pin has an inserting portion inserted into the chamber for contacting the power plug connector and a connecting portion. The first shell has a soldering portion for being connected to ground. A middle of the supporting plate defines a window. A plurality of contacting pieces at intervals are extended towards one side from an edge of the window and extended into the chamber for abutting against the power plug connector.