The Cisco Catalyst 3750X-48T-S Layer 3 Switch is an enterprise-class stackable switch. This switch provide high availability, scalability, security, energy efficiency, and ease of operation with innovative features such as Cisco StackPower, optional network modules, redundant power supplies, and Media Access Control Security (MACsec) features. The Cisco Catalyst 3750X-48T-S Layer 3 Switch with StackWise Plus technology provides scalability, ease of management and investment protection for the evolving business needs.