I could only get the pink cable to work on my PC at work, and only through a super cheapo USB hub. And even then it'll start charging, then stop, then start again. Sometimes it won't charge at all until I jiggle the cable a little. It would not work on my Macbook at home or directly plugged into the USB ports on my work PC, no matter how much I fiddled with the cord. I would not recommend this cable.
Doesn't charge properly. Need to hold iPhone/iPad at a certain angle to get it to charge and still keeps on disconnecting. Can't believe I bought one of these in each colour, will try other colours but so far it's rubbish (this was the blue one).