What is the Cyan Inc 280-0275-ST?
The Cyan Inc 280-0275-ST is a XFP optical transceiver module, listed by the manufacturer as "Cyan Compatible 10G XFP, 10GBASE-LR, OC192-SR1, STM64-I64.1, 1310 nm, 20km SMF LC, DDM, I-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.