EZ-Cube Programmer not connecting

Hi all,

I am trying to program RL78/G12 R5F1068 MCU using this programmer but facing problems. Whenever I connect the EZ-Cube programmer to PC(Windows 7) Windows displays message that USB driver not installed,and my MCU is not detected in PC. I tried searching for drivers of this programmer but didn't found any.

Any help would be appreciated.