The USB specification limits a single cable length to 5 meters (approx. 16 feet 5 inches) for full speed devices. The maximum theoretical distance between a PC and a DT USB module (full speed) is about 30 meters. This distance would include a maximum of 5 powered USB hubs and (6) 5 meter USB cables. *NOTE: for additional information please visit http://www.usb.org/about/faq/ *Created: 11/10/05.