The present invention provides a method and apparatus to be used to extend
the range of standard USB devices, and in particular, USB devices
operating in accordance with Revision 2.0 of the USB Specification. An
extended range hub is provided which comprises a Local Expander (LEX) and
a Remote Expander (REX) which can be separated by up to, for example 100
meters. The LEX and REX operate in accordance with an enhanced high-speed
USB Extended Range Protocol (USB-ERP) which permits USB devices to be
more conveniently located and used, and is in compliance with Revision
2.0 of the USB Specification.