My wife made this for my birthday a year or so ago. It’s ruined me, better than almost every restaurant. Shame it’s so labor intensive.

I actually worked on the team that designed these! If I recall correctly, the top connector is for the motherboard BMC. It should work fine without being connected. The right hand side as others said is power.

Amen. We have a direct plumb Oscar II and everything just stays on the counter.

Nothing to add except calling the PSP retro made me feel old.