Click or Add a device at the top of the window . Select The printer/device that I want isn't listed .

Download the driver from the HP Support site if available . Right-click the downloaded .exe file and select Properties . Go to the Compatibility tab.

Choose to refresh the list of available drivers. Search for "HP" under manufacturers and look for the HP ScanJet 3500c or a similar series (like 3500 series) . 3. Method B: Install in Compatibility Mode