To redirect USB devices plugged in your Worksation to Terminal Server you just need to install USB-Redirector RDP Edition both on your Workstation computer and Terminal Server computer.
USB redirector RDP Edition uses Virtual channel between Workstation and Terminal Server in its work. And it guarantees fast and qualitative operation of your USB devices
There is no need to tune complicated system's settings or use hardware solutions anymore. You just need to indicate USB devices you want to redirect on Terminal Server and establish connection via Remote Desktop. That is all. In a second, indicated USB devices become available on Terminal Server and you can use them!