Intuitive 4-button controls for forward, back, blackout, and play for a slideshow, red laser pointer, 65-foot wireless range, internal storage for wireless USB receiver, plug & Play 2. 4GHz USB connection, compatible with Windows 10, 8. 1, 8, 7 and Mac OS X. When you've got a Kensington presenter, you've one less thing to worry about. Kensington's wireless presenters are designed with intuitive controls and thoughtful features that help you focus on what truly matters: your audience. Forward and back buttons seamlessly move your PowerPoint or Keynote presentation slides, along with screen blackout option and a button to activate the laser pointer. Make your point at the touch of a button with a bright red laser that can highlight any part of your presentation with complete effectiveness with a 65 foot range. An internal Receiver Storage area gives a convenient place to store your wireless USB receiver so it won t get lost, as each presenter and receiver are uniquely paired to preve