AT&T Quicksilver USB Connect Card (AT&T) Connect your laptop to AT&T's 3G network with this ultra-compact USB modem Tri-band 3G connectivity provides access to AT&T network as well as global 3G connectivity (international plan required) When 3G network not available, seamlessly connects to GPRS/EDGE network Four-position click mechanism for swiveling cap design--no protective cap to lose Plug-and-play operability with automatic installation of AT&T Communication Manager software; Mac OS- and Windows-compatible