It is designed to allow the user to perform mouse functions without being limited by the space required to operate a standard input device. HARDWARE REQUIRMENTS: The Fellowes Micro Trac requires a PC-compatible computer with a PS/2 or USB port. SOFTWARE REQUIRMENTS: The Fellowes Micro Trac is a plug and play device that requires no additional software. The device will function with the following operating systems: Windows 95/98/2000/ME/XP or NT 4.0. See for the latest information regarding this