What is the Fibroptico GLC-BX53-D-FO?
The Fibroptico GLC-BX53-D-FO is a SFP optical transceiver module, listed by the manufacturer as "SFP 1000Base-BX-D (Tx1310nm/Rx1550nm, 20km, SMF, DOM) multi vendor Compatible (Cisco/CTC etc)". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.