With the driver installed and the adapter plugged into the computer, there should be a Ports options listed in Device Manager.Find Device Manager in the list and click to open it. If using Windows 7, click the Start button and select Control Panel.Select Device Manager from the expanded window. In Windows 8, move your mouse to the bottom left corner of your screen and right-click.Connect the adapter to the computer after the driver has been installed.(The files must be extracted before the driver can be installed.) Then extract the files to a new folder and run the driver installer.
Save the file somewhere to your computer that you can find it or select open.Select and download the driver compatible with your operating system.Click "SOFTWARE, FIRMWARE & DRIVERS" found in the i n the left column.
You can also Click here to download the driver for the Keyspan (USA-19HS) adapter. The driver will be on a disk that comes with the Keyspan adapter.