I got a new case for my cluster and didn't want any warts on the wall of the extension. I tried a cheaper POE hat and it was bad. This works very well, but remember that you will need to remove all of your heatsinks. I connected my 8 Raspberry Pi 4s using POE hats and a 120W POE switch. There are several lost packets and I can't tell if it's the Switch or the Pis. All in all a very good item that appears to be working properly (I don't think my RX issue is related to the hat). This consumes less than 4W in idle and only about 6W under load on the Pi.
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