Cisco DS-SFP-FC16G-SW is a 16-Gigabit Fibre Channel Shortwave SFP+ optical transceiver designed for Cisco MDS 9000 Series Multilayer Directors and Fabric Switches. It provides high-performance Fibre Channel connectivity using short-wavelength (850 nm) multimode fiber (MMF) with duplex LC connectors, supporting 4/8/16 Gbps auto-sensing Fibre Channel operation.