Although not dealing with Cisco directly Dell switches are around in network closets and with my limited experience with Compared to a Cisco switch dell has few commands when configuring SSH.This is a safety feature to protect your laptop. You may want to install a temperature monitor provided by Dell which should tell you what temperature it is reaching.
Up for sale is a Dell PowerConnect 5524 switch. This is NOT the PoE version, this is just the standard 24 port managed switch! It's in great condition and comes with the power cable, rack ears, and the RJ45 to DB9 serial console cable. I've wiped it and it is ready for use! It's also running the latest 5500 Series firmware.