3G HSPDA USB modem wireless network card, sierra wireless aircard, aircard 881U:

The AirCard 880U AirCard 881U are the latest in USB modems from Sierra Wireless.  Designed to work on HSUPA networks, mobile users will experience significantly increased speeds -  up to 7.2 Mbps downlink and 2.0 Mbps uplink.
These USB modems are a flexible solution, ideal for desktop or notebook computer use and are compatible with both Windows and Mac operating systems.  The familiar USB connection and simple setup make getting a fast, reliable wireless connection easy.

KEY FEATURES
Transfer wireless data at speeds of up to 7.2 Mbps on the downlink and 2.0 Mbps on the uplink, on the latest HSPA networks
Familiar USB connection
Fully compatible with HSDPA, UMTS, EDGE, GPRS, and GSM networks
Supported OS: Windows Vista, XP, 2000, and Mac OS X
Internal battery that supplements the power from the USB port when extra power is required
KEY BENEFITS
Portable solution for enterprise & home use
High speed wireless connectivity in more places than Wi-Fi, offering greater mobility
Global compatible - support for latest HSPA technology, but backward compatible where unavailable
Reliable connection and speed, even in fringe network areas .