“This is a very useful hat, with two significant caveats. The first is that the fan is a bit annoying; there are quieter fans available in a similar form factor so I might see if I can replace it.
The second is that because the socket for the POE pin header connector on the Pi has been surface mounted, it has rather a tenuous connection to the board. As a result, removing the hat can easily cause the socket to detach (as I discovered). It isn’t too hard to solder it back on again, but worth noting. I think if I’d designed it, I’d have used a through hole part for the socket for that reason.
A final note is that if you have a heat sink on your Pi, you’ll probably need to remove it to install the hat. Not a big deal, but worth mentioning as the reason I had to remove the hat in the first place was that I spotted the heat sink fouling components on the back of the board.”
