Description Cisco SFP-10/25G-LR-S Compatible is a dual-rate 25GBASE-LR SFP28 transceiver reaching 10km on single-mode fiber at 1310nm. It features duplex LC connectors and supports both 10G and 25G speeds with integrated DOM functionality. This module is an ideal solution for single-mode fiber environments undergoing phased performance upgrades in Cisco networking systems.