Wisenet TMC-GSFP Transceiver/Media Converter - 1 x Network (RJ-45) - Single-mode, Multi-mode - Gigabit Ethernet - 10/100/1000Base-TX, 1000Base-FX - 1 x Expansion Slots - SFP (mini-GBIC) - 1 x SFP Slots - Standalone, DIN Rail Mountable, Rack-mountable: