Microsoft will shortly announce a recall of nearly all Surface Pro, Surface Pro 2, and Surface Pro 3 power cords over concerns that they can overheat under the wrong circumstances.
The recall, set to be formally announced on Friday morning, affects all Surface Pro devices sold before the 15th of July, 2015. Anyone with a Surface Pro power cord sold before this date can voluntarily hand it over to Microsoft via a yet-to-be-announced process to claim a free replacement.
Damage to Surface Pro power cords from being "wound too tightly, twisted or pinched over an extended period of time" is apparently the cause of the overheating issues. According to a statement from Microsoft to ZDNet, the problem led to a "very small proportion" of owners reporting issues with their power cord.
It should be noted that all power cords for Microsoft's latest Surface products, the Surface Pro 4 and the Surface Book, are completely fine. However, if you own an older Surface Pro, it's probably a good idea to replace your power cord for free.