|1. Control Panel|
3. Device Manager
Expand "Universal Serial Bus Controllers" - IF one is described as "Enhanced Host Controller" then you have USB2 - the "Enhanced" is vital
If not then go here
and download the first option (check the chipset list for K8N800) then follow the instructions - open the zip file and click on "setup.exe"
That will install USB2 for your VIA chip set!