About This File
Uninstall the kekst on your network card, if it is present there, that there was no conflict when the equipment. Next, download a program Kext Wizard. With it set this kekst tick the folder System / Library / Extension, select the drive and click the button. Will recover the rights and update system cache to disk. Do a reboot.
Review the contents of the package. In the PlugIns folder are supported network card.