10G SFP+ LR is a standardized 10G optical transceiver designed for single-mode fiber transmission up to 10km using a 1310nm wavelength. Choosing the proper SFP+ module, whether it be SR, LR, or ER, can have significant impacts on performance, reliability, and costs. In practical. FS 10GbE SFP+ module solutions provide a wide variety of 10 Gigabit Ethernet connectivity options for data centers, enterprise wiring closets, Internet Service Providers (ISPs) applications.