Cisco S45ESK9-12240SG= operating system

IOS Software for Supervisor Engines IV, V, and V-10GE (Enterprise Services image with 3DES and BGP support) The new Cisco IOS Software Release 12.2(40)SG is for all shipping Cisco Catalyst 4500 Series supervisor engines. This new release works with the new CenterFlex technology to enable granular optimization of voice, video, and data communications, delivering high centralized performance, flexibility, high availability, operational simplicity, and investment protection. The Cisco IOS Software Release 12.2(40)SG thus maximizes performance, enhances the end-user experience, and offers unprecedented control and flexibility over hardware resources.