PATCHBOX PLUS Fiber Optic Cassette. Retractable patch cables for perfect patching. Replaceable modular cassette system. Cable length: 2.7 m. Fiber quality: OM4. Connectors: LC - LC. Integrated cassette labeling. Cable stopper for precise cable length adjustment. The PATCHBOX is a modern cabling system for network cabinets that replaces conventional cable management and patch cables. Through an innovative mechanism, the PATCHBOX provides patch cables in the correct length. This has elevated the industry standard to a new level: a completely new type of cable management in network cabinets that drastically accelerates all work processes. LC Connector. The LC connector is a high-performance fiber optic connector for singlemode and multimode applications, characterized by low insertion loss. It is one of the most common types of fiber optic connectors. The design of the LC connector is based on a single-fiber ceramic ferrule with a diameter of 1.25 mm for a fiber optic cable. Due to its compact design, the LC connector allows for high packing density, making it frequently used for fiber optic switches. OM4 Classification. The OM designation for a fiber optic cable defines the quality class of a multimode fiber optic cable. The classification distinguishes four classes (OM1 to OM4). The distinction is made based on the level of optical attenuation and the possible transmission rate and distance. The fiber categories OM3 and OM4 are intended for high-speed applications such as (10/40/100-)Gigabit Ethernet or Fibre Channel at 850 nm. OM4-class multimode fibers have an Effective Modal Bandwidth (EMB) of 4.7 GHz x km.