Onewell 2.4GHz Wireless Presenter USB Remote Control Presentation Mouse Laser Pointe H52 Built-in docking bay stores receiver for easy pack up and portability One-touch keys easy to control slideshow. Buttons: laser pointer, page up, page down, launch slide show, black screen A red laser pointer that's easy to see against most backgrounds, highlight key areas of your slides Wireless remote control distance range of up to 39 feet (12 meters), so you can free to move around the room and interact with your audience Support options: Supports MS Word, Excel, PowerPoint, ACD See, website, iWork (Keynote & Numbers & Pages) etc; For MacBook on OS X 10.11 El Cap, plug the usb receiver into laptop, it will come out a box, and then you can select 101or104 option