Yesterday, Microsoft was reportedly going to issue free recalls for some of its power cords, citing potential fire hazard problems for a certain range of the Surface Pro cables. Now Microsoft has made that official. Redmond is starting a voluntary replacement program for Surface Pro AC power cords that were sold before March 15, 2015 in the US and Canada or before July 15, 2015 in other markets. But, given that the Surface Pro power line comes in two pieces, which is exactly the power cord and which ones are eligible for the free replacement? Microsoft has pictures to clarify.