title: Mac OS X 10.10 disable USB ports
body: <p>Can anyone tell me how to disable all usb-ports on OSX 10.10 (Yosemite)?
  We've got a large number of iMacs setup, where we don't want the user to be able to control/use USB ports.</p>
  
  <p>In previous OSX versions, the command was</p>
  
  <pre><code>cd /System/Library/Extensions
  mv IOUSBMassStorageClass.kext/ IOUSBMassStorageClass.kext.bup
  </code></pre>
  
  <p>But this no longer works under Yosemite?</p>