The USB Rover 200 extends the range of USB up to 40 m/131 ft over fiber optic cable. Fiber-optic transmission provides exceptional reliability and immunity to interference including complete electrical isolation between computer and device. The USB Rover 200 is available in lengths of 10, 20, 30 and 40 meters for extension/isolation, and in a 1 m length for use in applications where electrical isolation is desired.