After banging around Casio's site and their archive.org, I was not able to pull a manual. I had mine shipped in the original box without manual or accessories, but I think I was able to get most of the information. I had taken it apart before, but was not interested in doing the same to see the graphics chip or size of the inbuilt storage. It is quite finicky when taken apart, as in it will not power on if some of the sliding plastic parts or screws are not in place, so it is a high risk brick if any pieces are lost in the disassembly.
For posterity I have attached a marketing image of it and a link which can be found on archive.org, since the site is down these days.
http://www.casio.com/education/index.cfm?page=/education/computer.htm
(computerextender.gif)Attachments
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A-21S_Spec.xls (68KB - 2 downloads) computerextender.gif (20KB - 1 downloads)
