🚀 go-pugleaf

Hi Travis,
You may find this of some help, if you have more specific questions email me
direct :-
ATX m/b's have com ports hardwired (built in), with sockets along the edge
of board to protude out of the back of the PC case, are generally larger
than AT (approx 12"x9"), usually have USB ports fitted, and more importantly
have a different power socket (two rows of pins) to the older AT format.

AT have ribbon cable leads to connect com ports on m/b to case back & a
power connector with one row of pins.
As you are thinking of fitting a new motherboard to your existing
case, you therefore need to consider the physical size of new board, (will
it fit & do the PCI/ISA cards line up with the case apertures) & existing
power supply outputs & connector.
n.b. some manufacturers fit both types of power connector to aid people who
are 'upgrading' & extra power regulators to supply the lower voltages
required by the newer processors.
Most people keep to the same format as existing motherboard to avoid the
problems listed above, or change the case (incl power supply) to gain the
advantages of the ATX format.
If you have access to  Computer Shopper or similar publications
manufacturers often carry fullpage adverts with pictures of both types of
m/b's, you can indentify your current type.
Hope this has been of some help in avoiding the common pitfalls when buying
a new m/b.
Regards Dave

Travis Collins <NOSPAM@isd.flightsafety.com> wrote in message
news:MPG.11136a71179a45d2989682@news.onramp.net...
>Hello,
>
>I will be replacing my motherboard very soon and I was rather confused by
>the different types of motherboards I've seen in ads and catalogs.  How
>would I tell what style of motherboard I have in my machine now?  And
>also what styles will fit my chassis?  Do the different styles have
>different placements of the mounting screws, or is it just the placements
>of the components on the boards that differs.
>
>I will probably be buying the new board through a catalog or over the
>net.  Is there any other critical information I should know before making
>my purchase?
>
>Any help would be greatly appreciated.  Please reply to the group if
>possible.
>
>TIA,
>
>Travis Collins
>--
>
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