Download Lenovo Tab2 A7-20 USB Driver
Actually, There are 2 USB drivers available for your Tab2 A7-20.
#1 for Flashing the Stock Firmware.
#2 for connecting the device to the computer.
Lenovo Tab2 A7-20F 16 GB driver For Flashing Firmware
Lenovo Tab2 A7-20F 16 GB driver For Normal Connecting
