What is the Ciena 170-3938-900?
The Ciena 170-3938-900 is a SFP+ optical transceiver, listed by the manufacturer as "CIENA 3938, (2)1G/10G SFP+,(2)100M/1G/10G RJ45,(8)10/100/1000M. 2 x 1/10G SFP+ ports. 8x 100/1000M SFP ports.". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
