Tp-Link Sm311Ls(Un)

The TP-Link SM311LS (UN) is a Gigabit SFP (MiniGBIC) optical transceiver module used for fiber network connections in switches and routers that support SFP slots. It is designed to extend network links over long distances using single-mode fiber (SMF), making it ideal for enterprise networks, campus setups, and long-distance LAN connections between buildings.

This module supports 1.25 Gbps Gigabit Ethernet (1000Base-LX) over LC duplex single-mode fiber, typically reaching distances of up to 10 km to 20 km depending on fiber quality and network setup. It is hot-swappable, meaning it can be inserted or removed without powering down the device. The SM311LS is widely used in managed switches (such as TP-Link JetStream and Omada series) to provide stable, high-speed backbone connections between network devices.