SP400 Smart-Pointer 2.4Ghz RF Wireless Presenter with Mouse Function and Laser Pointer enables you to control your onscreen presentations within a range of 100 feet, making it the perfect tool to use in a large conference room. The presenter supports the most common PowerPoint presentation functions including Page Up, Page Down, Mouse Arrow, Right Click, Left Click, Darken Screen, and Resume Screen. It also has a laser pointer built-in to help your audience focus on key points of your presentation. The compact and lightweight design lets you control your presentation with ease as you present. Just plug and play and you are ready to go - no software is required. No need to aim the transmitter to the receiver. Minimum system requirements: Windows 7, Vista, XP, Mac OS with one USB Port To use: - Plug in USB receiver into computer you would like to pair with. - Wait a few moments to allow the drivers to install. - While the LED light on the receiver is blinking, press and hold any button (except laser) on the SP400 remote for 4 seconds. This will allow the remote to communicate with the receiver. - The LED light will turn off. - Push the Mode switch on the right side to Presentation or Mouse mode. - If the laser remains in the On position, this indicates that batteries must be replaced.