I found this PDF: https://www.ibm.com/ibm/history/documents/pdf/as400.pdf > 1994...

tapland · on Jan 15, 2019

Isn't the Advanced Portable just a regular ATX-sized box?

jzwinck · on Jan 15, 2019

Yes, the AS/400 9401 "Advanced Portable" is the size of a regular desktop PC. Some pictures are here: https://www.flickr.com/photos/31231773@N02/albums/7215762371...

I have one. Even at the time it was considered a toy, too small to do anything serious. Another 9401 model called "Advanced Entry" was significantly more capable, and was the smallest anyone would actually buy. Documentation (last updated in 2013, about 20 years after the machine was current): http://www-01.ibm.com/common/ssi/printableversion.wss?docURL...

The portable was more of a sales and training tool, with a base 8 MB of RAM (maximum 16 MB in 1994, 56 MB in 1995) and billed as a single-user machine: https://www-01.ibm.com/common/ssi/cgi-bin/ssialias?appname=s...

IBM also claimed the portable could be used for "low cost kiosks." The starting price adjusted for inflation to 2019 was over $12k.