Detail overview DELL S4112T-ON Networking 12p 10gbe Base-t 3p Qsfp28 Os10 Switch Ports : 12 X Fixed 1/10gbe Auto-sensing Rj-45 Ports Uplink Ports : 3 X Fixed 100gbe Qsfp28 Ports Power Supply : Dual, Fixed Ac Psus Poe : N/a Transceivers : Not Included Airflow : Standard (i/o To Psu) Default Operating System : DELL Os10 Enterprise Cables Included DELL Os10 Enterprise Included Condition : Refurbished. Availability : In Stock. Our Warranty : 30 Days.