FastTrackUltra ElCapitan 1.0.1(ElCapitan 10.11.5)

This is a IOUSBHostFamily.kext from a clean install of ElCapitan 10.11.5 with following modifications :

removed AppleUSBEHCI.kext, AppleUSBEHCIPCI.kext, AppleUSBOHCI.kext, AppleUSBOHCIPCI.kext, AppleUSBUHCI.kext, AppleUSBUHCIPCI.kext, AppleUSBXHCI.kext, AppleUSBXHCIPCI.kext from Plugins folder.

added previous Yosemite versions of AppleUSBEHCI.kext, AppleUSBOHCI.kext, AppleUSBUHCI.kext, AppleUSBXHCI.kext (taken from IOUSBFamily.kext Plugins folder, from a clean install of Yosemite 10.10.5) inside Plugins folder.

This allows to use Yosemite compatible USB devices, such as Avid/M-Audio Fast Track Ultra USB soundcard, with ElCapitan.

BACKUP first ! Install with utility of your choice (for instance : http://www.insanelymac.com/forum/topic/140647-latest-kext-utility-el-capitan-super-speed-edition/ )