The TP-Link TL-SM311LS is a high-performance single-mode MiniGBIC (SFP) transceiver designed for gigabit network infrastructures requiring long-distance fiber connections. Supporting 1.25 Gbps 1000Base-LX operation and equipped with an LC/UPC duplex port, this module ensures reliable and stable data transmission over long distances on 9/125 μm single-mode fiber, reaching up to 10 kilometers.

Constructed to be SFP MSA-compliant and hot-swappable, the TL-SM311LS allows for easy installation and maintenance without disrupting network operations. The module features Digital Diagnostic Monitoring (DDM), enabling real-time status monitoring to ensure optimal performance. Powered via the host device at 3.3 V, it operates efficiently within an environmental range of 0°C to 70°C, with a storage temperature between -40°C and 80°C.

Ideal for extending fiber links in TP-Link switches such as the JetStream series, SL, SG, and TL model families, as well as media converters like MC220L and MC210CS, the TL-SM311LS module offers versatility and excellent compatibility. It meets multiple safety and emission standards, including FCC and CE certifications, and comes with a 3-year limited warranty.

Key Benefits:

• Long-distance transmission up to 10 km on single-mode fiber


• Seamless compatibility with a wide range of TP-Link network devices


• Hot-swappable design for easy upgrades and maintenance


• Real-time diagnostics via DDM for network reliability

For more details and support, visit the [TP-Link product page](