What is the Dell S3048-ON?
The Dell S3048-ON is a SFP+ optical transceiver, listed by the manufacturer as "1000BASE-T, 48 x 1000BASE-T, 4 x SFP+, 1 x AC PSU, 3 x Fans, I/O Panel to PSU Airflow". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.