The AMD D700AUT1B Duron 700Mhz CPU processor is a high-quality modem card designed by USRobotics. This processor has a clock speed of 700MHz and a bus speed of 200MHz, making it suitable for a range of computing tasks. With a L2 cache of 64KB, this processor is efficient and reliable for modem capabilities. The Duron processor is ideal for users looking for a well-performing computer component that can handle various modem standards including ITU V.92, ITU V.22bis, and more.