... AirCard 881U are the latest in USB modems from Sierra Wireless. Designed to work on HSUPA networks, mobile users will ... USB connection Fully compatible with HSDPA, UMTS, EDGE, GPRS, and GSM networks Supported OS: Windows Vista, XP, 2000, and Mac OS ... KEY BENEFITS Portable solution for enterprise & home use High speed wireless connectivity in more places than Wi-Fi, offering greater mobility ...