support.lexmark.com

You can connect Lexmark printer to your computer/devise using a USB printer cable or your LAN using a wireless connection.
The USB printer cable is a sufficient way to connect this printer to your computer. You will also need to install the Lexmark printer driver for this printer.

Visit official website to know more :-  support.lexmark.com 

Also Visit mcafee.com/activate and 123.hp.com/setup