DESC: Get fast, reliable modem connections with the 3Com Megahertz 56K Global GSM and Cellular Modem PC Card. Available in 18 languages, this modem easily configures for phone lines in more than 250 countries/regions as well as for multiple dial-up locations. And wherever you connect, U.S. Robotics' advanced line probing technology delivers higher modem throughput and more reliable connections - even over the worst line conditions. Use it with your laptop running DOS, Windows, Mac OS, or Linux, and select analog cellular phones or GSM handsets.