Operating System: Mac OS (Note: might work with other versions of this os.)
Description:Wireless Keyboard and Ergo Optical Mouse Drivers
The file is a self extracting DMG file.
Download it to a location where you know you can find the file. Make sure that the location you are downloading it to does not have any other setup.exe files in. Once it is downloaded locate the file and double-click on it and follow the on-screen instructions.