3Com 3CRPAG175 Wireless LAN PC Card supports all three existing IEEE 802.11 networking standards-11a, 11b, and 11g. That means you can stay connected, no matter what wireless environment you're in: the office, at public wireless "hot spots", at home, or on the road. Features: The 3Com® 11a/b/g Wireless PC Card delivers one of the most robust suites of standards-based, next-generation security features on the market today. 3Com-patented XJACK® antenna design extends for excellent wireless LAN performanc. Supports speeds up to 54 Mbps on 802.11g or 802.11a networks. 3Com Wireless LAN Manager creates profiles that reflect specific configurations for each place wireless notebook users travel.