Microsoft Mouse Quick Manual page 5

Vertical scrolling
Horizontal scrolling
Tap the Windows button to switch between an open app and the
Start screen.
Customization
Windows 8: Press + W on your keyboard (or swipe in from the right).
Tap or click search, then settings, then enter action center in the Search
box. In the Action Center, under Maintenance, then Device software,
choose install.
Windows 7: The Mouse and Keyboard Center app is available from the
Start menu.
www.microsoft.com/hardware/downloads