I never thought the Brazillians on the cutting edge of technology, but it would seem Unitron had Apple beat at their own game introducing advancements to the original compact well before the SE hit the shores. Not likely expandable, at least it solved the drive problem. And they were green long before Apple choosing to use three standard batteries rather than one toxic one for the PRAM backup.

http://chester.blog.br/mac512.html

Myoldmac.net has a nice thread on the subject.