Request for schematic and PCB details for the A2B Raspberry Pi daughter card

Hi everyone,

I’ve been following the A2B Raspberry Pi guide and noticed that a dedicated daughter card is used between the Raspberry Pi and the ADZS‑AD2428MINI. Unfortunately, I haven’t been able to find any publicly available schematic, layout details, or documentation for this board. Several discussions imply that the board performs direct pin‑to‑pin routing between the Pi and the A2B breakout, but no concrete technical details seem to be published.

Could someone who has access to the schematic, pin mapping, or any hardware documentation for this daughter card please contact me via direct message.
I would greatly appreciate any details that would help in recreating or sourcing a compatible version of this interface.

Thanks in advance!