Cisco MGBSX1 SFP Transceiver | Gigabit Ethernet (GbE) 1000BASE-SX Mini-GBIC (MGBSX1)
This easy-to-install Mini-GBIC (or SFP) module provides a simple way to add Gigabit functionality to your Linksys switch. Gigabit fiber is often used to connect two switches together. The technology used depends on the distance between the two switches.