Usually it is.. this equipment is a very low quality Chinese one. I solved using a different connector from one universal Targus power supply for laptops. But it could cost you more than buying a new tablet. However, if you need to extract some info from it and you don 't want to use an additional power supply, there is a way to put a tiny aluminum band paper around the plug to press the contact inside. That will last while you don't pull the plug again... very impractical but only for emergency.