For fiber optic connector, there are two types connector for drop cable connection. The NEC classifies communications cables into several types based on their fire rating: CMP for plenum spaces, CMR for vertical risers between floors, and CM or CMG for general-purpose use. Cables also can't be painted or coated after installation, because paint, plaster, or chemical residues can. A drop cable, commonly referred to as a cable drop, is a critical component in network connectivity, typically used to connect a computer's Network Interface Card (NIC) to a wall plate. Serving as the final link in the networking chain, it plays a vital role in ensuring a stable and reliable. Household optical cables are divided into two types: Fiber-Reinforced plastic and steel wire reinforced. The horizontal wiring in buildings does not require high fiber optic cables. Use:. Drop cables are available in many different types. Flat Type Drop Cable, also known as flat drop cable, with a flat out-looking, usually consists of a polyethylene jacket, several fibers and. The main types of drop cable include indoor drop cable (GJXFH, GJXH, GJXKH), outdoor self-supporting drop cable (GJYXCH, GJYXFCH, GJYXKCH), flat drop cable, and circular drop cable.