The HP 5-Button Optical Comfort Mouse is a specific model of computer mouse made by HP (Hewlett-Packard). It features an optical sensor for precise movement tracking and typically comes with five buttons, including the standard left and right click buttons, a scroll wheel, and extra buttons for customizable functions (such as forward and back navigation in browsers).

The Windows driver for this mouse helps ensure that all of the mouse's features work correctly with a Windows-based operating system. While Windows generally provides basic support for most mice, drivers can offer additional functionality, such as the ability to configure the extra buttons, adjust sensitivity, or customize the mouse's settings.