AT&T will soon lunch the Option GT Max 3.6 Express ExpressCard and later in May the Sierra Wireless AirCard 875U mobile broadband USB device. They both use AT&T's 3G BroadbandConnect service and are able to download a 1 MB file in about 15 seconds. These devices can be used in 125 countries, where AT&T is present.
The Option GT Max 3.6 Express works in newer notebooks with ExpressCard/34 or ExpressCard/54 slots, and features a flip-up antenna and uses Advanced Receiver Technology for improved 3G performance. The GT Max 3.6 The card supports Microsoft Windows XP, 2000 and Vista OSs.
The Sierra Wireless AirCard 875U mobile broadband device plugs into the laptop's USB port. It comes with a battery to ensure optimal performance, and it also supports Microsoft Windows XP, 2000 and Vista.
AT&T's DataConnect plans:
Unlimited DataConnect rate plan - $59.99 inside the U.S.
DataConnect North American - 100MB for $109 a month (Canada and Mexico)
DataConnect Global plan - 100MB for $139 a month (many European countries, India, China and Japan).
Last two plans also include unlimited data usage in the U.S.