SATA HAT Power Supply jack dimensions


What are the actual dimensions of the v1.2 DC Jack? According to this: it’s 5.5mmx2.1mm, but I bought a power supply with that kind of jack and it doesn’t seem to fit, it seems to be just a bit too thick to fit properly.

The one I got was specifically this one:,aps,85&sr=8-39&language=en_GB

Maybe it was mislabelled, but I would like to be sure what dimensions the DC jack actually has.

Related to that, where can you find a good PSU for this thing? I can’t find anything anywhere, that one was the only one I found an it doesn’t even fit.