Panduit HD Flex™ Fiber Cabling System: Built for Next-Generation Density Demands. The HD Flex™ Fiber Cabling System is engineered to provide the highest levels of density and serviceability for high-performance data centers. The system is purposely designed to enable organizations to easily scale up density and execute moves, adds and changes quickly and safely, without disrupting adjacent circuits.Technicians can take advantage of the unique benefits provided by the HD Flex™ Cabling System. Innovative cable management that positions trunk cables away from the rear of the enclosure, providing enhanced access for moves, adds, and changes Split trays inside the enclosure support safe moves, adds, and changes Cassettes accessible from the front or back to streamline installation and migrations from 10G to 40G/100G Ethernet and beyond Convertible enclosures and panels that accommodate 4-port, 6-port, and/or 12-port cassettes