There are some other differenced between an AT and ATX board.  The AT boards
are an older design and used the older, large diameter keyboard socket (5 or
8 pins).  They also used COM1 for the mouse.

The ATX motherboards on the other hand use the modern 6 pin mini-din
connectors for the mouse and keyboard.

-rick


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Randy Kramer
Sent: Monday, September 03, 2001 4:53 AM
To: [EMAIL PROTECTED]
Cc: Hans N.
Subject: Re: [newbie] OT - Hardware Dimensions


Franki wrote:
> If you have an AT board and case, the power supply has a seperate on/off
> switch that cuts the power from the motherboard directly... (an AT board
has
> a power plug to the board that is made up of two seperate plugs.)

Just a few points:

1.  Just to make it clear, an AT motherboard must go into an AT case, an
ATX motherboard must go into an ATX case.

2.  Unless you find a case that can handle either.  I've seen them
advertised, never touched one.  The metalwork has to be slightly
different between AT and ATX (for the on board connectors, at least --
maybe there are some knockouts for either style?), the power supply plug
to the motherboard must be different (maybe they would have both
styles?), and ?

3.  I'd double check a Compaq -- last time I tried to put a standard
motherboard in a Compaq case, it didn't work -- it wasn't really a
standard AT case (which means the motherboard wasn't standard AT
either).  That was probably 5 to 8 years ago, but ...

Randy Kramer



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