Catalyst 3750V2 24 100BASE-FX ports with 2X 1Gig SFP The Cisco Catalyst 3750 v2 series switches are next-generation energy-efficient Layer 3 Fast Ethernet stackable switches. This series of switches supports Cisco EnergyWise technology, which enables companies to measure and manage power consumption of network infrastructure and network-attached devices, thereby reducing their energy costs and their carbon footprints. The Cisco Catalyst 3750 v2 series consumes less power than its predecessors and is the ideal access layer for enterprise, retail, and branch-office environments, as it increases productivity and investment protection by enabling a unified network for data, voice, and video.