TP-Link Omada SM321A 1000Base-BX WDM Bi-Directional SFP Module

The TL?SM321A is a reliable, budget-friendly solution for extending gigabit networks over a single fiber strand, ideal for environments needing remote switch or converter connectivity up to 10?km away. It's hot-swappable, diagnostic-capable, and plug-and-play-though officially EOL, it's widely supported by TP-Link gear and third-party replacements.