Fiber optic patch panels are mostly mounted in 19 inch relay racks, but also on freestanding rails, cabinets and walls. In a typical setup, the connection consists of a shorter cable plugged into the front side of the patch panel and a longer cable plugged into the back. These individual strands will then connect to electronic devices. ed with SC-duplex connectors. This article presents four guidelines that make practical conformity at patch panels possible. The “NEC and Optical Fiber Cable and Raceway Rules” state: “You must install. Fiber optic patch panels are now gradually becoming a common product in optical fiber wiring systems, especially in high-density wiring environments such as data centers and server rooms.