MacBook Air – Fixing USB Device Limit

Do you have a MacBook Air and a 30 iPad sync & charge trolley and wonder why Configurator can't see all 30 at once ?

MacBook Air is a great laptop to run Configurator, but it's important to know that some models have a software limit on the number of USB devices you can connect at once.  Sounds like this is to help with energy saving as part of giving it such an awesome battery life.

Fortunately, you can change this setting by doing the following:

  1. Login to the MacBook Air as Administrator
  2. Open Terminal  (It's in Applications > Utilities)
  3. Run this command:  sudo nvram usb-options=”%01%00%00%00″
  4. When asked, enter the Admin password for the MacBook Air
  5. Restart your MacBook Air

Note: If you ever want to reverse this, use this Terminal command:  sudo nvram -d usb-options