OM4: They also have aqua jackets and 50 µm cores, but are optimized to support 10 Gigabit Ethernet at 550 meters lengths and 100 Gigabit Ethernet at 150 meters using MPO connectors. They are usually used in High-Speed Networks, Data Centers, Financial Centers and Corporate Campuses. Fiber optic patch cords are key components for efficient, low-loss optical signal transmission between devices and fiber optic cabling links. Multimode fibers are described by their core and. This guide walks you through every variable that matters: fiber type, bandwidth rating, maximum distance, connector compatibility, and real-world deployment scenarios. By the end, you'll know exactly which cable type — OS2, OM3, OM4, or OM5 — belongs in your specific environment.