Well...
There were initially two Mini systems released which were both the same chassis just different colours. The black was the Vic Mini, which was a Atom based system, then there was the silver Amiga Mini. The Vic was replaced by the Zotac, which is the one on ebay, which then became the Amiga Mini. The other was a AIO called the Vic Slim which also had a "pro" version which was a silver cybernet system to start with then got replaced by the same Vic slim but with a better onboard graphics card and more RAM.
it should be noted that the Vic Mini was only a flash in the pan thing and was rolled into the Amiga Mini lineup shortly after announcement.