US Robotics' (USR) x2 modem technology, which provides a 56Kbps transmission rate, may well be the last gasp of the traditional analog modem. The fact that 56Kbps is only possible in one direction ...

This kept upload speeds limited to 33.6 kbps. USRobotics was one of the innovators in the 56k modem space. Note the x2 branding on this SPORTSTER modem, denoing the company’s proprietary ...