Here’s an advert (from the linked page):
With the disk, video, and even CP/M cards inside the box, having no internal slots seems like a fair decision: bringing the bus out and allowing for a multi-slot expansion board means the flexibility is retained.
Interesting, I think, that in this case Multitech avoided (or tried to avoid) legal trouble by writing their own ROMs, and in a later incarnation as ACER they similarly needed to avoid trouble in the PC clone market. And they also had a suit with Hayes about modem licensing.
There was also the Microprofessor II which was mostly Apple II compatible. It always ran in hi-res mode and emulated text and lo-res mode in software. And the keyboard connected directly to the address and data bus like in Sinclair machines. To a Basic user it looked liked a slow Apple II.
It was actually cloned in Brazil by Microdigital as the TK2000 but placed in a case that looked exactly like the Atari 1200.