Thanks to a video of Bob from RetroRGB I was introduced with the Fenrir ODE for the Sega Saturn.
The Fenrir ODE is a replacement for the original optional drive with very little installation skills needed.
I installed the Fenrir in my own boxed Sega Saturn.
Sega Saturn with Fenrir ODE running OutRun (Sega Ages Vol.1).
I ordered it with the Fenrir ODE SD Card Mount Kit.