Last year Apple unveiled the 12-inch Retina MacBook. This is Apple’s first MacBook that uses the new USB-C standard, a move which is understandable, but yet frustrating since Apple only decided to include one port. That being said, it seems that some of the USB-C cables for the laptop might be faulty, so much so that Apple has since launched a replacement program.
According to Apple’s support page, “A limited number of Apple USB-C charge cables that were included with MacBook computers through June 2015 may fail due to a design issue. As a result, your MacBook may not charge or only charge intermittently when it’s connected to a power adapter with an affected cable.”
To find out if you have the affected cable, just look on its side. If it reads, “Designed by Apple in California. Assembled in China,” and that’s all there is on it, then you have the affected cable. The redesigned cables will have the exact same wordings, but will also have a serial number accompanying it as well (see screenshot above).