Dell S5348F-ON pulled from a never setup enterprise rack. The devices have basically no power on hours. 2 of them were bought and placed in a rack for years never to be used as the enterprise migrated to the cloud. I have rails for each unit. This last units airflow has the air reversal kit, where the air exhausts out the front (where the ports are).These switches are great in that they are basically a computer, so you can run many custom firmwares on them like Microsoft Azure's SONIC.