Excellent machine, needs a bit of tweaking before sticking it inside a cabinet
The "-Cade" part of this seems excellent, some good configuration options that should make it easy when I incorporate it into my cabinet.
Mine arrived assembled (almost too much so: to configure on an HDMI TV I had to remove the HDMI connection between boards and rename Mister_HTMI.INI to replace the default). They've pre-flashed the included 32GB MicroSD RAM with Mr Fusion so you skip to configuring Wifi (or plugging in a network cable) and executing update_all.
The "tweaking" I mention in my title is with respect to the "MiSTer-" portion of this: configuring whatever controllers you have to work across all games, and how the video is slightly outside the frame for some titles. You'll be tweaking and resetting until you get it like you want before sticking it inside a cabinet. MiSTer is marvelous but not quite ready to go out of the box.