What is the Oem Comp SFP-1G-L80-C55-CS?
The Oem Comp SFP-1G-L80-C55-CS is a SFP optical transceiver module, listed by the manufacturer as "Cisco CWDM-SFP-1550 (CS0O) 1000Base SMF SFP CWDM 1270nm-1610nm 80km 0C to 70C LC Duplex DDM". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.