Microsoft recently announced that their thriving device series Surface Pro AC cord have some Safety issues. So they started a replacement program. This is applicable for only those devices which are sold before March 15, 2015, in the U.S. and Canada and before July 15, 2015, in other markets.
This is the reported issue of AC Power Cord
If the cord is wound too tightly, twisted or pinched over an extended period of time there is a potential risk for the AC cord– the cord that connects the power supply unit to the electrical socket – to overheat.
Till now there are no reports of serious injury, but Microsoft have too much priority on user’s safety. So they decided to replace the power cord with zero cost.
If you bought a Surface Pro, Surface Pro 2 or Surface Pro 3 in the above time-frame, we recommend you get a free replacement AC power cord from Microsoft as soon as possible.