The USB 2.0 Drivers for Windows XP and Windows 2000 Were Provided By Microsoft Only.
For Windows XP
Please link the following path to download Windows XP SP1 or later version to install USB20 Driver
http://www.microsoft.com/WindowsXP/sp1/default.asp
Make sure that you already setup Windows XP SP1 or later Service Package version finish and restart your computer.
Then press the USB2.0 button again, it will help you to finish installation of USB2.0 Drivers.
For Windows 2000
Please link the following path to download Windows 2000 SP4 or later version to install USB20 Driver
http://www.microsoft.com/Windows2000/downloads/servicepacks/sp4/
Make sure that you already setup Windows 2000 SP4 or later Service Package version finish and restart your computer.
Then press the USB2.0 button again, it will help you to finish installation of USB2.0 Drivers.