*Compatibility* Compatible with operating systems range from Windows 98/ Windows 2000/Windows 2003/ XP/ Vista/ Win7/ Win8/Win10
*How To Connect It With Your Devices?* Find the USB nano receiver(Note: It is in the battery compartment of mouse), plug it in the USB port of your device. Then it will automatically pair and connect.
*Can It Work With Mac OS System?* The keyboard designed according to Windows system. But it still can roughly work with the Mac OS system. Because of the design difference between the two different systems, a little adjutment in settings of APPLE computer are required if you want to use the Ctrl or Alt keys normally: System Preference--Keyboard--Modifier Keys--Select Keyboard--then adjust it as your preference