The DataPro 1443-FF coupler is a duplex multimode fiber optic
adaptor with dual SC jacks at both ends.
These are a common type of fibre optic connector used in computer
networking, and this coupler will allow you to patch two cables
directly together and create one super mutant mega cable. Fiber optics
are hardly susceptible to distance limitations, so this type of
coupler is a convenient way to get additional distance using cable
assemblies you already have.