how to activate usb ports on 27" cinema display

I tried to attach keyboard and trackball to the usb ports on the back of the display, but they don't work. The display is hooked up to a miniport on a Mac Pro purchased in September 2010.


  • Asked by Geirr A from Howard Beach
  • Jun 5, 2011
QA Apple 27-inch LED Cinema Display

QA Apple 27-inch LED Cinema Display

Product No Longer Available

1 Answer from the Community

  • You need to plug the usb cable that is part of the cabling that comes with the Cinema Display into your Mac Pro, then the usb ports will work.

    • Answered by Joshua W from Marysville
    • Jun 6, 2011