Quote:
Originally Posted by Chuck Baier  Our unit works just fine with a 20 foot active USB cable attached to the 4 foot cable that comes with the unit and have easily reached 2 miles to pick up a very usable signal. |
In practice, the Universal Serial Bus (USB) specification limits the length of a cable between full speed devices to 5 meters (a little under 16 feet 5 inches). For a low speed device the limit is 3 meters (9 feet 10 inches).
Goto:
USB.org - FAQ: Cables, Connectors, and Networking
The USB signals going in and out of an “
Active” extension cable are buffered to assure signal quality and the meeting of the USB2.0 Electrical and Timing Specifications. Using passive cables for the purpose of extension will result in signal errors and is not recommended.