Default Breaking the usb lock

Him new in this forum so pls forgive my mistakes.

Im from turkey and the government gave us tablets (general mobile etab 4). But there is a usb lock so u cant connect to a pc. I installed a usb host checker app and 2 files are missing in a folder called permissions. I cant have a write accsess.i want to root my tab.

Any methods are accsepted.

Thx