D-Links new line of Gigabit Interface Converters (GBICs) and Small Form-Factor Pluggables (SFPs) transceivers represent an industry leading combination of performance and affordability. D-Links new Gigabit transceivers are available in two form-factors standard (GBIC) or (SFP)/mini-GBIC.The DEM-311GT is a high performance 850nm multimode SFP/mini-GBIC transceiver. Supporting full duplex, Gigabit speeds on multimode fiber for distances of up to 220m/550m on 62.5m/50m fiber respectively. The unit features a metal housing to reduce EMI and to increase durability. The DEM-311GT is hot pluggable and is backed by a standard 3-year product warranty and free technical support. Third-Party Devices Must Comply With specified Supported Industy-Standard Specifications