The CrystalLink USB2.0 Dual-Port extends devices up to 330 feet (100 meters) over CATx UTP/STP cable. Two USB devices such as a keyboard or mouse, USB disc drive, USB printer, or USB joystick can be extended away from the host PC. Additional USB devices can be connected using a powered USB hub. Up to 4 powered hubs can be cascaded at the remote end.

The CrystalLink USB2.0 Dual-Port extension system consists of two units, a transmitter and a receiver, each in a compact steel chassis. The transmitter connects directly to the CPU's USB port. The transmitter and receiver are linked via CATx solid core cable and the USB device is directly connected to the receiver unit.

Only one external power supply is required at the transmitter end.