The software is provided as an executable file which will install the correct software drivers for these models of Deskjet printers. The printer needs to be disconnected initially and then plugged in via USB port when instructed to do so by the upgrade software. HP 3520 / 3535 / 3550 Deskjet Driver is a software driver package which aims to install the latest solution for successful communication between Windows and the above models of HP Deskjet printers.
