Cisco 10GBASE-LR-S SFP Module, Enterprise-Class

"Cisco SFP-10G-LR-S Module (S-Class) The Cisco 10GBASE-LR module supports a link length of 10 kilometers on standard single-mode fiber (SMF) (G.652). SFP-10G-LR-S does not support FCoE. C-Class S-Class Single-rate optics: Ethernet only Operating temperature range Commercial (0C to 70C) only"