SFP 4Gbs CWDM FC modules operate at a rate of up to 4G, and communicate over single- or multimode fiber in a variety of wavelengths spanning distances of up to 200 kilometers.
SFP 2/4G FC
SFP 2/4G FC Transceivers support multimode dual fiber, single-mode dual fiber, single-mode single-fiber, Coarse Wave Division Multiplexing and Unshielded Twisted Pair copper cabling.