The Usb Active Extension Cables Actively Buffer The Incoming And Outgoing Signals To Ensure Compliance With Usb'S 2.0 Specification For Electrical And Timing Minimums. You Can Connect Up To 5 Active Extension Cables End-To-End To Achieve Up To 80Ft Extension! Both Low And High Speed Usb Devices Will Function Equally Well With The Usb Active Extension.