Tp-Link TL-SM321B-2 1000Base SFP ModuleTP LINK TL SM321B 2 1000BASE SFP MODULE PRODUCT DESCRIPTION: TP LINKs TL SM321B 2 is developed in accordance with the Small Form Pluggable Multi Source Agreement (SFP MSA). As a WDM Bi Directional optical transceiver, TL SM321B 2 uses an integrated LC Bi Directional optical interface connector and the data link is up to 2 km in 9 125 m SMF (Single Mode Fiber). Also, TL SM321B 2 incorporates the Digital Diagnostic Monitoring (DDM) feature which is
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