8VISIONEER 9020 USB SCANNER INSTALLATION GUIDE
2.Check that the TPA cable is plugged into the Option port on the back of the scanner.
Your 9020 scanner is shipped with the TPA cable already plugged into the Option port, however, if the cable came loose during shipping, you must plug it into the port securely.
3.Plug one end of the USB cable into an available USB 1.1 or USB 2.0 port on the computer.
4.Plug the other end of the USB cable into the scanner’s USB port.
USB
If the plug does not attach easily, make sure that you are plugging it in correctly. Do not force the plug into the connection.
Some computers also have keyboards with USB ports. You can plug the cable into the keyboard instead of the USB port on the computer.
5.Plug the power adapter cable into the power jack on the back of the scanner.