FO patch cables are defined components of an international standardized structured cabling of ISO/IEC11801.Historically grown in the structured cabling many different connectors, whereby the following are still relevant: LC, SC, E2000, MPO/MTPEAn optical fiber patch cable represents the shortest connection between a passive cabling port and an active network port or a point-to-point connection of two active network ports.Quality classes allow a qualitative differentiation of the FO patch cables depending on the network serviceSimilar names for patch cables:patch cable, adapter cable, connection cable, hybrid cable, jumper, connection cordFeatures of EFB FO patch cablesTension relief reinforced with aramid yarnHalogen-free and flame-retardant jacket according to IEC-60754-2, IEC-60332-1 and IEC-61034EFB FO connectors meet the min. quality class Grade B/2 according to IEC-61034. Grade B/2 according to IEC-61753-1 for singlemode and Grade A/1 for multimode according to IEC-.