Root KL3 without USB

Hi guys. I need to root my girlfriends N7000 to SIM unlock it and eventually change the ROM. Somehow, she managed to damage the USB port and it only charges but connecting the phone to a PC wont detect it so I can't root using a PC.

My question is, are there still any apps like z4root to root the phone without USB?

The phone is on KL3,

Thanks!