The CISCO GLC-LH-SM is a Gigabit Ethernet SFP transceiver module that facilitates long-haul communication over both multimode and single-mode fibers. Using a wavelength of 1310 nm, it is capable of reaching distances up to 10 kilometers on single-mode fiber (SMF) and up to 550 meters on multimode fiber (MMF), making it exceptionally versatile. Equipped with an LC connector, the module is part of Cisco’s wide array of network solutions designed to provide high-speed, reliable connections for enterprise and data center networks. Its LX/LH designation indicates its compatibility with both LX and LH optical links, allowing it to serve in diverse networking environments. Additionally, the hot-swappable feature ensures minimum downtime, as these modules can be replaced or upgraded without interrupting the network.