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![1000Base-BX WDM Bi-Directional SFP Module [TL-SM321B-2]](https://iristechworld.com/wp-content/uploads/2025/08/TL-SM321B-2UN_R_large_1596528553756e-4x4.jpg "TL-SM321B-2UN_R_large_1596528553756e.jpg"){kind=small}
![1000Base-BX WDM Bi-Directional SFP Module [TL-SM321B-2]](https://iristechworld.com/wp-content/uploads/2025/08/TL-SM321B-2UN_A_large_1596528564698q-4x4.jpg "TL-SM321B-2UN_A_large_1596528564698q.jpg"){kind=small}
Adopts the latest standard 1000Base-BX
Up to 2 km transmission distance in 9/125 Ξm SMF (Single-Mode Fiber)
Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)
Supports Digital Diagnostic Monitoring (DDM)
Supports Hot Swappable
1000Base-BX WDM Bi-Directional SFP Module [TL-SM321B-2]
ð Call
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| Brand | TP-LINK |
|---|---|
| PRODUCT TYPE | āļŠāļ§āļīāļāļāđāđāļĨāļ°āļŪāļąāļ |
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