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From: ong@d.cs.okstate.edu (ONG ENG TENG)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Motherboard Size
Message-ID: <1991Jan15.191014.10@d.cs.okstate.edu>
Date: 15 Jan 91 19:10:14 GMT
References: <2415@bnlux0.bnl.gov>
Organization: Oklahoma State University
Lines: 15

From article <2415@bnlux0.bnl.gov>, by weiner@bnlls1.nsls.bnl.gov (Gary Weiner):
> 
>  	I have a No-Name IBM-PC Clone (8088) that I purchased ~2 years
> ago. I am now thinking about upgrading to a 286 Motherboard(on my way to
> a 386). The only problem is that I don't know what size case (AT, XT, Baby)
> I have. How would I detrmine this? Are their standard measurements/dimensions
> etc. ? Your help is appriciated.

Well, I think there is only 3 types of non-customized boards ever 
on the market: 1) the 5-slot original PC
               2) the 8-slot XT, currently also the baby-AT or mini-AT
               3) full-size AT
So, to upgrade you should probably get a baby-AT motherboard.  Remember, you
might also want to change your hard drive controller from 8-bit to 16-bit.
Anyone who know better regarding the form factors please correct me.