I have a MacBook Pro (Retina, 13-inch, Late 2013) and an iPad 4. The iPad is freshly installed.
Whenever I plug it into the left or right USB port of my MacBook, it connects for a fraction of a second (the power indicator on the iPad turns green and iTunes opens), but then it disconnects again. This goes on and on, re-connecting every few seconds.
There's a video of the behavior here:
What I've tried
- When I plug it into the Apple keyboard's ports, it is not charging, but now the connection is stable. iTunes also recognizes it properly now.
- I've already tried it on another Windows PC, where it works fine. Also, I've tried using another cable – no dice.
- Restarting the Mac and the iPad
Here's what the System Profiler has to say about the MacBook with no peripherals connected:
Is it the internal memory card reader that drains all the required power? But why?
What could I do to make this behavior stop?