What is the Finisar FTLF1721P1BCL?
The Finisar FTLF1721P1BCL is a SFP optical transceiver module, listed by the manufacturer as "Finisar® FTLF1721P1BCL Compatible TAA Compliant 1000Base-LX SFP Transceiver (SMF, 1310nm, 40km, LC, DOM)". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.