This is a 300ft 6xLC (male) to 6xLC (male) aqua OFNR (Riser-rated) 6-strand armored fiber trunk cable. An OM4 cable has a core size of 50 microns that can support 100 Gigabit Ethernet at lengths measuring up to 150 meters. It is most commonly used for 100 Gigabit Ethernet applications. This optical fiber, nonconductive, rider-rated cable is best suited for use in interior fiber-optic applications.A duplex cable is a two-strand fiber optic patch cable that works best with transceivers that both transmit and receive. Our patch cables are 100% compliant for all of your networking needs. Our products are guaranteed by federal law to not affect or void OEM warranties.