If you aren't using all the ports on the switch, you aren't really exercising the switch much. That a 48 port witch with ~10% of the ports in use doesn't overheat and isn't even spinning its fans at max when in a garage in Texas in the summer isn't really surprising. It isn't surprising in the same way that a modern desktop or notebook system in the same environment not overheating in if all you de is power it on and let it idle is is not surprising.
Start using a significant portion of the switching backplane capacity and see how well it does then though. That would be a much more interesting result, whether the device succeeds or fails.
Start using a significant portion of the switching backplane capacity and see how well it does then though. That would be a much more interesting result, whether the device succeeds or fails.