Cisco Aironet AIR-CB21AG-A-K9 802.11a/b/g Wireless Card High-performance 54 Mbps connectivity in the 2.4 and 5 GHz bands Superior range and throughput; Wi-Fi compliant for wireless connectivity Secure network communications; world mode for international roaming Comprehensive utilities for flexible, easy configuration and management Performance, security, and manageability that businesses require