A USB connector for connecting with a USB female includes a rotating shaft assembly which is capable of rotating, metal legs, a connecting line, and a substrate. The rotating shaft assembly includes a rotating shaft, a rotating shaft sleeve and a rotating shaft support. The rotating shaft is disposed in the rotating shaft sleeve and is capable of rotating relative to the rotating shaft sleeve. The rotating shaft sleeve is located in a support hole of the rotating shaft support. The rotating shaft assembly with the rotating shaft support is fixed on the surface of the substrate by the rotating shaft support. The metal legs are formed on the surface of the substrate to ensure the connecting strength of the metal legs and reduce the thickness of the USB device.