Both Apple and Microsoft have recently issued a recall on some power cords/adapters.

This is for some Apple wall plug adapters shipped from 2003 to 2015 with Mac and certain iOS devices and Microsoft AC power cords for Surface Pro, Surface Pro 2, and certain Surface Pro 3 devices.

Read more:

Apple AC Wall Plug Adapter Exchange Program
Microsoft AC power cord recall for Surface Pro, Surface Pro 2, and certain Surface Pro 3 devices