The FRM220-1000TS is a transparent Gigabit Ethernet 1000Base-T to 1000Base-SX/LX SFP converter with very low latency. They aremanaged (when installed in FRM220 with NMC) or non-managed stand-alone media converters, which give you the options tochoose from a wide range of industry standard SFP modules with LC connectors. SFPs in multi-mode and single mode types areavailable as well as BiDi which allows bi-directional transmissions using only a single fiber cable. Because they are completelytransparent to Ethernet packets, they are able to support any size frames, including undersized or jumbo packets (>9K bytes). LEDindicators signal the power status of the converter, UTP port speed, Link, and duplex status, FX port Link and duplex status.