Macsense AeroCard Extreme 802.11G Cardbus Card for PC and Mac (WPE-800) Up to 54Mbps extreme-speed data transfer rate. Up to 1,312 feet (400m) operating range in an open environment. Compatible with Mac OS X (10.2 and above) and Windows 98/Me/2000/XP Interoperable with 802.11B and 802.11G devices and works with all standard Internet applications. Supports 64 and 128-bit WEP encryption for highest security.