🔌 UCTRONICS PoE HAT for Raspberry Pi 4: Power Over Ethernet Expansion Board with Cooling Fan Review

Nicely made POE hat, except for one major flaw - the green power connector is sticking out of the edge of the board (as is the little connector with the red/white wire). can fit in many high-precision engineering cases that don't expect anything beyond the size of length/width pi. Yes it adds some height, I bought the case with the extra height and it was great except it didn't fit due to the overhang issue. It would be great if in a future version the GPIO pin would be extended as well.

While the product does what it's supposed to do, I'm not thrilled. The case was difficult to assemble, and after that not everything is so reliable. I had to REMOVE the heatsink from the CPU to attach the HAT. Before, my CPU was running at around 50C. Removing the heatsink and shutting off the airflow caused the processor to reach 72C. I can just remove the case and try to attach the Pi and a 12V DC 120mm fan to the board and use the larger fan for cooling. I think I can connect a larger fan to

The fan is incredibly loud for its size. It can vibrate the whole bookshelf. The best fans cost more, but that thing sucks if you use it all the time. Of course, the header is an odd thing that you won't find anywhere else associated with a fan, so you'll need to buy a better, less noisy fan and hook up a cable to get a usable system. Or UCtronics could just put a fan on top of it, which isn't a loud piece of junk in the first place. The case is halfway through the fan upgrade. First one, and…

So you're really only interested in two things. First is the PoE hat itself. I found it solid and reliable for a few months. That's good, but the bad thing is the fan. He is tiny and therefore also loud and whiny. I wouldn't recommend keeping it near a place where people are working or sleeping because it's terribly annoying. The other big, big problem is the /ridiculously/ crappy acrylic case. It's hard to assemble, the tiny screws are cumbersome, plus it's flimsy and it's too easy to break…

I tried this product to run an rPi for a pihole that tends to generate heat. The fan was the loudest in the entire 6U rack in my home office, which also houses a Synology NAS, a 16-port POE switch, and a few other devices. I decided to order another one, hoping the noise issue was an accident. It was not. I bought two versions of this POE hat. The one that came with a case and one that didn't. I really like this case, but this POE hat is too loud for practical use outside of a data center…

The specifications for this device allow 3 amps at 5 volts or 2 amps at 12 volts and some combinations up to 25 watts. So I charged it at 22 watts: 2 amps at 5 volts and 1 amp at 12 volts. The device then drew 29W from the 802.3at switch. That is more than the permitted 25.5 watts. The device used 29 watts to produce 22. I also tested it with a 5 volt, 3 amp load - it took 21 watts to get 15 watts. The ripple at 1 amp and 12 volts was over 1 volt ripple. Those 6 and 7 watts are warm. The device