The Cisco Air-CB21AG-E-K9-40 Aironet CardBus Wireless Adapter is designed through enterprise level security needs in mind the Cisco Aironet adapter uses the 802.1X standard for port support network access. A full arrangement of EAP (Extensible Authentication Protocol) types for user base confirmation, together with enterprise calibre AES (Advanced Encryption Standard) offer complete 802.11i support. The adapter supports WPA2, the Wi-Fi Alliance certification for interoperable, standards based wireless LAN security. The Cisco Air-CB21AG-E-K9-40 Wireless CardBus Aironet Adapter helps users to generate particular profile settings for dissimilar settings, making it simple for telecommuters and business travellers to shift from one location to another. The Cisco Aironet products with comprehensively bundled simple to use customer network management benefits to offer a protected, instinctive, and reliable way to supervise and configure the adapter.