the stackup is kinda cursed, with the pi zero sitting on the pcb, and the hdmi-csi (pi camera connector) module on top of it, sharing 2 screwholes
and underneath that are the 4 mosfet relays + resistors.
on the back is the header to connect the ATX frontpanel stuff, and two USB-A ports to isolate power from the otg port going to the server usb port