1. Full function Driver
Full-featured drivers allow you to take full advantage of your printer, and HP provides useful software to help you operate. If you have an all-in-one machine, this driver can provide complete printer functionality, including printing, scanning, photocopying, and faxing.
Other features
A searchable help file tailored to your printer.
Image editing software.
HP supplies store.
During a fully functional installation, you can select a custom installation to select the specific software you want to install.
2. In-os Driver
Windows 8 In-os Software is a driver that has been installed on your computer to support basic printer functionality; If most of the buttons in the printer control Panel are not available, you will not be able to use the EFax feature (if your printer has that feature) and scan output features such as scanning to e-mail.
Therefore, you do not need to download and install any other software from HP to use your printer. You can also use this software for basic printing, scanning, and faxing tasks, and for importing images from memory cards If your printer has these features.
3. Windows Update Driver
Your Windows 8 computer is pre-installed with a driver named In-os driver. This software supports your printer with basic functionality. Windows Update can be used to determine if you have the latest In-os driver installed by manually downloading the driver or setting the Automatic Updates feature in Windows 8.