I do not think I've shared this design here. I recently released my RD-10 clone of the KB-10 interface that I wrote about in this series of blog posts. The unit is functional, implements two cartridge slots (Slot2 & Slot3), both +/- 12v rails, a +12 / +5 / GND port useful for powering floppy drives, as an experimental Audio Input port. It does not include the Printer Port. I didn't think it was very relevant in 2022. It should be compatible with the MX-10, MX-15, and MX-101 as I believe they all share the same pinout for the expansion adapter. The source files, STLs for a printed case, and gerbers can be found here: https://github.com/jdgabbard/RD-10-Docking-Station
Here are some pictures for your viewing pleasure.
