TP-LINK TL-SM321A-2 1000Base-BX SM WDM Bi-Direct. SFP, 2km
1000Base-BX WDM Bi-Directional SFP Module,LC Connector, TX:1550nm/RX:1310nm, Single-mode, 2kmCompatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)Supports Digital Diagnostic Monitoring (DDM)Supports Hot SwappableSupports Hot…