The Nuance Dragon Naturally Speaking 12 Home Edition Speech Recognition Software is a standard license product designed for use with Microsoft Windows operating systems. With a minimum of 2 GB of RAM and a 3.2 GB hard drive space, this office and business software app offers accurate speech recognition in English. This DVD format unit by Nuance is ideal for individuals looking to improve their productivity with a reliable and efficient speech recognition tool. With a minimum processor speed of 2.2 GHz, this software allows for seamless integration into various computing devices for a single user.