What is the Worldwide FTLX1672D3BTL-WT?
The Worldwide FTLX1672D3BTL-WT is a SFP+ optical transceiver, listed by the manufacturer as "1550NM EML PIN 10GE-ER 3.1-11.3GB/S TRANSCEIVER ROHS COMPLIANT SINGLE MODE PLUGGABLE SFP+ FOOTPRINT 3.3V LC CONNECTOR DIGITAL DIAGNOSTICS -40/85 C OPE". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.