Cisco-Linksys WPC51AB Dual-Band Wireless A+B Notebook Adapter Operates with both the 5 GHz, 802.11a and 2.4 GHz, 802.11b standards 11 Mpbs data rate in 802.11b Mode, 54 Mbps in 802.11a Mode Enhanced security -- Up to 152-bit data encryption Included Setup Wizard takes you through configuration, step by step Cardbus Interface for laptop use