AirTurn&reg; At-104 Page Turner (Wireless USB for Windows PC) For Windows PC*. Easy to use with no software to install! Simply plug the receiver into the USB port of your Windows or MAC PC and connect the transmitter with your favorite momentary foot pedals or switches. Functions with any software that turns pages using the PageUp and PageDown keys, including PDFs, Microsoft Word, PowerPoint, and most music reader programs. Compatible with a wide range of pedals and footswitches for single or bi-directional page turns. (Requires momentary switch pedal - sold separately - with a 1/4" audio mono/stereo cable for each pedal) Each transmitter/receiver is paired with a unique ID, so multiple devices may be used in a room together. *Compatible with Windows Vista and 7 - NOT compatible with Windows XP