Globetrotting digital nomads can depend on Sierra Wireless AirCard USB 308 modems for secure Internet roaming worldwide. These second generation AirCard modems for HSPA+ networks support speeds of up to 21.1 Mbps download and 5.76 Mbps upload. Along with the modems is Sierra Wireless AirCard WatcherTM software which makes life simple. Get online fast in a single click and browse effortlessly even when conditions are less than optimal with Internet Explorer performance boosts of up to 50 percent.Sierra Wireless has specialized in wireless technologies for more than 16 years and delivers products with a proven track record of reliability. Enterprises and consumers rely on Sierra Wireless modems more than any other brand.Key Benefits:Supports latest high bandwidth applications including video, gaming and graphicsCompact and rugged no worries USB design for life on the roadProven reliability and performance from Sierra WirelessSupports Windows 7 and Mac OSPlug-and-play and single click installation gets users up and running quicklyStore and share more with built-in microSD slotThis item is only compatible with an AT&T sim card (unless the item is unlocked). Sim card and data plans are not included