What is the Fibroptico FO-3HE11239AA?
The Fibroptico FO-3HE11239AA is a QSFP optical transceiver module, listed by the manufacturer as "100GBase-ER4L QSFP28 (SMF, 1295nm to 1309nm, 40km w/host FEC, LC, DOM) Lucent". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.