I was in need of a scanner and after reading reviews in pcworld,pc mag and others decided on the s400. bought it locally and followed the install instructions that came with the product. First install software,then connect scanner to power and usb it to computer. I was ready for my first scan. Unfortunatly the driver for the scanner that is included did not recognize the scanner. So i called support up on my dime and was on the phone with them for over 30 minutes and they told me to download the updated driver which is on the web site. I did,uninstalled the driver that came with it and installed the new driver. It worked for about 20 min and then the scanner would not activate. So unstead of calling support again i returned it. To pay for support during the installation process is not for me. I am sure this is a fine unit,but for me it did not work.