The Cisco 10GBase SFP+ modules give you a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and service provider transport applications. The Cisco 10GBase-SR module supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000MHzkm MMF (OM3), up to 300m link lengths are possible. Using 4700MHzkm MMF (OM4), up to 400m link lengths are possible.