How should I do when my computer or DocAction can not detect the scanner?

Plustek Original FAQ Link

If the scanner is not detected by DocAction software:

• Check the connection of USB cable between computer and scanner (do not use USB hub).
• Make sure the scanner is power on.

Please try manually installing the software. (For Windows OS)

1. Right-click on Windows Start icon and go to Device Manager.
2. In the Device Manager, right-click on this scanner under Other devices and select Update Driver Software.
3. Click Browse my computer for driver software.
4. Select the folder or the CD/DVD-ROM drive that contains scanner’s driver and manually run the install.exe file.