Gigabit networking is the upper echelon of performance, especially compared to 10 and 100 Mbps connections. Formerly Linksys Business Series, now Cisco Small Business Network Accessories, the MGBT1 10/100/1000 Base-T Mini-GBIC SFP Transceiver gives you the ability to tap into faster networking speeds with a standard RJ-45 connection. Installation is as easy as sliding it into an accompanying port on a compatible Cisco switch.