The Catalyst 4500 Series with Center Flex technology provides scalable nonblocking Layer 2-4 switching with Secure, Flexible, Non-Stop communications, enabling business resilience for enterprises, small & medium-sized businesses (SMBs), & Metro Ethernet customers deploying business-critical applications. Center Flex technology is the technology enabled by the Supervisor 6-E centralized ASICs, which deliver the highest centralized performance & configuration flexibility in the industry. Center Flex technology enables granular optimization of real-time voice, video & data communication, maximizing performance & enhancing end user experience. The new "E-Series" with Center Flex technology is designed with unprecedented backward & forward compatibility delivering exceptional investment protection & deployment flexibility to meet the evolving needs of organizations of all sizes.