SDIO 802.11b/g Wireless LAN SD Card SDIO 802.11b/g Wireless LAN SD Card for PDA &amp; Mobile Devices General Features: 802.11b/g compatible SDIO interface compatible Supports infrastructure and Ad Hoc Peer-to-Peer connectivity Internal antenna Frequency Range: 2.412 ~ 2.484 GHz band Indoors Range: 328 feet (100 meters) Outdoors Range: 984 feet (300 meters)