The kvm-tec 7008 is a LWLMM2 IG 1310nm Fiber optic multi mode SFP module that transmits up to 1.24 Miles(2km). kvm-tec extenders are equipped standard with a pluggable SFP module for multimode fiber optics up to 500m or with single mode up to 20km. You can switch to other modules at any time, such as singlemode up to 80km, or singlemode bidirectional (only 1 glass fiber) for ranges of up to 20km. 4K Ultraline Extender comes standard with a multimode SFP 10G (850nm) up to 300 m. An optional fiber optic singlemode SFP+ module is available up to 10km (1310nm).