Cisco ASA 5500 Edition Bundle, ASA5555-K9 is the ASA 5555-X with SW, 8GE Data, 1GE Mgmt, AC, 3DES/AES. Cisco ASA 5500 series adaptive security appliance fits your network and budget while offering the same proven level of security that protects some of the largest networks at some of the most security-conscious companies in the world. The ASA 5500 series scales to meet the performance and security requirements of a wide range of network applications, to correspond with your changing needs.