content: I am a High School World History Teacher and Technology Facilitator. I needed a multimedia controller that could control my PowerPoint presentation and Windows Media Player. I was looking for a controller that gave me the ability to walk around the class and control my computer from the other side of the room. The Keyspan does everything it claims to do. I can control my PowerPoint, Smart board, DVD movies and websites from across the room. It even has a laser pointer. The mouse feature allows you to control all your programs and right and left click anywhere on the screen. I was even able to use the Keyspan with people and obstacles between the controller and the receiver. I am using this product on a computer that is running Windows XP.