SATA HAT Power Supply jack dimensions

Hello,

What are the actual dimensions of the v1.2 DC Jack? According to this: https://wiki.radxa.com/Dual_Quad_SATA_HAT 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: https://www.amazon.nl/Universele-12V-transformator-EU-stekker-jackuitgang-CCTV-camera/dp/B09LHB52MQ/ref=sr_1_39?crid=189YA1RPO2A2O&keywords=ledlux+12v&qid=1657045978&sprefix=ledlux,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.