What types of wireless cards are compatible with the AT&T Wi-Fi network?
Any card that has been certified for compliance with the Wi-Fi wireless LAN standard (IEE 802.11b/g) can be used with the AT&T wireless service. If you have and 802.11n card that is backwards compatible with 802.11g you will be able to connect to an AT&T or roaming partner hotspot. For a list of qualified vendors, please visit the Wi-Fi Alliance Association Website.