I assumed it was for some sort of medical care, The picture with the fridges has what looks like a monitor on an arm to the right. It reminded me of something you’d see attached to an EKG or heart monitor something. I bet the fridges had medicine in them at one point.
People build out nice medical rooms in their homes if they/their family needs consistent medical care and they have money, that’s probably what happened.
That or it’s weird sex stuff.
I’ve shucked probably 100s of those WD essentials and they just had a little SATA -> USB adapter on it. It’s been a few years but it doesn’t seem like they’d make a whole new PCB just to include USB.