The FS SFP-10GLR-31 is a 10G SFP+ module that operates at 1310nm with a transmission distance of 10km. This module, produced by FS, is designed for use in enterprise networking and server environments. With a single port and a unit quantity of 26, this module offers high-speed, reliable network connectivity for various devices. Perfect for those looking to enhance their networking capabilities with a trusted brand like FS.