During last Black Friday I bought Raspberry PI 4 on Aliexpress for just $36. After initial tests I’ve found out that a good cooling case is definitely a must have. The SoC quickly reaches 80°C under a full load and then throttles from 1.5 to 1.0 GHz per ARM core to maintain the temperature limit. So, I ordered a very nice Chinese aluminium case for just $7.5. I love PoE devices – my new toy must also support Power over Ethernet – and it does!
I took a cheap LM2596 DC converter and installed it together with the board in the aluminium case.