Re: Im confused
Measuring the drop.
Assuming the picture isn't for show (which it seems to be), then there's probably a 3rd probe somewhere as well. Problem is, I'm not sure this is the same "home lab" context when you roll in ESXi unless you're trying to exploit some part of hardware pass through. I know it's a thing, but it's most certainly NOT the common usage of the term home lab.
"VMware also offers a cut of ESXi that runs on a single Raspberry Pi 4"
Don't by a RPi for that. ESXi requires the minimum of a 4GB version for a sane hassle free experience (realistically the 8GB version you'll need) and at that price you can get a second hand x86 that can handle 16GB of RAM for equal or less price that's fully functional.