Gigabit networking is the upper echelon of performance, especially compared to 10 and 100 Mbps connections. Formerly Linksys Business Series, now part of Cisco Small Business Network Accessories, the MGBSX1 Gigabit SX Mini-GBIC SFP Transceiver offers the ability to tap into faster networking speeds using fiber optic cabling. Installing the module is as easy as sliding it into an accompanying port on a compatible Cisco switch.