Hi… To install usb200, you can either run the disk or install the driver manually from device manager. If you choose to install from device manager, once the adapter is connected, you would see a device in ‘Other Devices’ and would Ethernet controller or network controller or USB adapter. Right click on it, say update drivers, select ‘Install from Specific Location’ and then ‘Don’t search I would select…’. It may ask you to select type of adapter, select Network Adapter. Select Have disk and manually provide the drivers from the CD or folder on the Hard disk where you have downloaded the drivers.