This is a standard multimode fiber optic jumper used for connecting devices in optical communication networks. It acts like a “data cable of the fiber world,” responsible for transmitting light signals stably and efficiently within racks, between servers and switches, or between different optical distribution frames (ODFs). It can connect dual-core fiber lines of network devices. Featuring high density (LC connectors), stable performance (UPC polished), soft and thin diameter (2.0mm), and flame retardant safety (OFNR-PVC sheath), this type can be applied in corporate local area networks (LANs), early data center internal connections, connecting fiber ports of network switches, servers, storage devices, cross-connections between ODFs, and for Gigabit Ethernet (1000BASE-SX) and Fast Ethernet applications.