On this page, we have managed to share the official usb driver for Celkon Q599 Device. If in case you were already searching for the usb driver for this device, then this page will help you out.
There are 2 usb driver available for your device. One is for Flashing the Stock Firmware and another is for normal connecting the device to the computer.
Celkon Q599 driver For Flashing Firmware
Celkon Q599 driver For Normal Connecting
How to install driver manually: