The Cisco 10GBASE-ZR module supports link lengths of up to about 80 kilometers on standard SMF (G.652). This interface is not specified as part of the 10 Gigabit Ethernet standards and is, instead, built according to Cisco specifications. SFP-10G-ZR-S does not support FCoE.
Cisco SFP-10G-ZR-S=, Fiber optic, 10000 Mbit/s, SFP+, 9/125 µm, ZR, 80000 m
Cisco SFP-10G-ZR-S=. SFP transceiver type: Fiber optic, Maximum data transfer rate: 10000 Mbit/s, Interface type: SFP+. Certification: MSA. Power consumption (typical): 1.5 W. Width: 13.4 mm, Depth: 56.5 mm, Height: 8.5 mm