WS-CE520-24LC-K9CISCOCisco Catalyst Express 520 Series Switches provide a secure, high-performance foundation for essential business applications that is both affordable and easy to deploy and use. A component of the Cisco Smart Business Communications System-a complete system of advanced voice, data, video, and wireless networking products designed specifically for SMBs-the Cisco Catalyst Express 520 Series supports your business' voice, security, and wireless networking services with a single, comprehensive platform.