This is a 15.0m (49.2ft) MPO (female) to MPO (female) aqua OM4 Multiple riser-rated patch crossover cable that is used for high speed data transfer. An OM4 cable has a core size of 50m microns that supports 10 Gigabit Ethernet at lengths measuring up to 550 meters and 100 Gigabit Ethernet measuring up to 150 meters and is reverse compatible with OM3. This plenum cable is the only cable allowed in spaces defined as air plenums such as raised flooring systems and air handling ducts. Plenum cables must self-extinguish and prevent re-ignition. Our patch cables are 100% compliant for all of your networking needs and are guaranteed by federal law to not affect or void OEM warranties.