The TP-Link SM311LM (TL-SM311LM) is a high-performance multi-mode MiniGBIC (SFP) fiber module designed to extend the network transfer distance for TP-Link managed and smart switches as well as compatible media converters. Supporting the IEEE 802.3z (1000Base-SX) standard, it operates at an 850 nm wavelength with a maximum data rate of 1.25 Gbps, ideal for gigabit ethernet fiber links.

This module supports both 50/125 µm and 62.5/125 µm multi-mode fiber cables, providing up to 550 meters reach over 50/125 µm fiber. Its SFP-MSA compliant, hot-pluggable design enables easy installation and replacement without needing to power down your device. Featuring LC/UPC duplex connector ports, the SM311LM supports Digital Diagnostic Monitoring (DDM) for real-time status and performance insights.

Powered by an internal 3.3V supply from the host switch, this fiber optic module meets FCC and CE certifications. It operates reliably within a temperature range of 0 °C to 70 °C and supports non-condensing humidity conditions, making it suitable for demanding LAN environments.

Compatible with various TP-Link switch series including TL-SG5412F, TL-SG5428, TL-SL5428E, TL-SG3210, TL-SG3216, TL-SG3424P, TL-SL3428, TL-SL3452, TL-SG2210P, MC220L, and others, the SM311LM is a cost-effective solution to enhance your network's fiber connectivity distance and performance.

For detailed product information, support, and downloads, visit the [TP-Link SM311LM product page](https://www.tp-link.com/au/business-networking/accessory/sm311lm/).