Add replace or upgrade sfp modules on gigabit fiber equipment the sfpsxmm gigabit 850nm multi mode sfp fiber optical transceiver lc 550m is built to comply with msa multi sourcing agreement standards to offer a cost effective way to increase performance and connectivity of your fiber connected network devices using a short wavelength 850nm vcsel laser diode enabling a maximum cable distance of 550m 03 miles over multi mode fiber this small form factor pluggable sfp gigabit mul