This is an AI summary, which is an experiment of ours, AI can make mistakes and people should always refer to the official brand write-ups for certainty.
The TP-Link TL-SM321A LC SFP Module is a high-performance 1000Base-BX WDM Bi-Directional SFP transceiver designed to expand network reaches with maximum efficiency. By utilising WDM Bi-Directional technology, this module enables data transmission and reception over a single strand of single-mode fibre, effectively halving the cabling requirements and reducing infrastructure costs while maintaining stable, high-speed gigabit connectivity.
Engineered for reliability in professional environments, the TL-SM321A supports a transmission distance of up to 10km or 20km depending on the hardware version, making it an ideal solution for medium-to-long distance fibre links. It features an integrated LC simplex connector and supports Digital Diagnostic Monitoring (DDM), allowing for real-time tracking of critical parameters such as operating temperature and optical power to ensure optimal network health. Fully hot-swappable and compliant with the Small Form Pluggable Multi-Source Agreement (SFP-MSA), this module provides a versatile and robust upgrade path for compatible routers, switches, and media converters.