Data cable and electronic device using same

An electronic device, comprising:

• a data cable electronically connected between the electronic device and an external electronic device, the data cable comprising:
• a first interface configured to be connected with a corresponding interface of the electronic device, the first interface comprising a first metal shell and a ground end;
• a second interface configured to be connected with a corresponding interface of the external electronic device, the second interface comprising a second metal shell, a ground end and an identification end;
• and
• a detection circuit configured to detect a voltage difference between the first metal shell and the ground end of the first interface, and transmit a detection signal according to detection of the voltage difference to the identification end of the second interface;
• a detector configured to receive the detection signal from the identification end of the second interface;
• a processor configured to determine whether voltage difference is generated according to the detection signal between the first metal shell and the ground end of the first interface;
• and
• a display configured to display current leakage information of one of two electronic devices when the processor determines that the voltage difference is generated between the first metal shell and the ground end of the first interface.