“Getting HATs connected to the RPi 400 is pretty annoying, I've got a right angled pin adapter as well but then your hat sits hovering above the keyboard in your way. This makes attaching HATs nice and easy but I had to sit my HAT on a little box to have it sit flat. I also struggled getting the HAT back out, it's a tight fit. I actually bent the pins slightly but managed to get them back. A guitar pick does a good job of getting your HATs out again!”