AT vs. ATX

What is the actual difference in AT and ATX cases? Is it just how the power supply and mainboard connect to each other? Is there something about the power switch in the case? Or is there something else that won't allow an ATX MB to fit into or work in an AT case?

 

Also ATX board has the ports like USB, printer and serial on the board. Where as AT just have the keyboard port and the rest of the ports need to be pluged into the board. One end plugs into the board the other end of the cable has the port on it. Therefore a AT case will not have the holes in the right place for the ports of a ATX motherboard.

 

The only difference I have seen between the last two cases that I purcahsed was the Power Supply.

I ordered one as an AT and the other as ATX.

They both came with hardware for the rear panel for both.

But other than the PS the cases in general were Identical.

BillyBob

 

I think you'll find that the specifications for ATX do include a kind of backward compatibility for AT, so an AT mobo will fit into an AT or ATX case, but an ATX mobo will only go into an ATX case.

BB, did the PSU on the ATX case include both sets of connectors ?

 

xane

so an AT mobo will fit into an AT or ATX case, but an ATX mobo will only go into an ATX case.

As to what MB will go into what case depends on the case itself. This is why reading the specs is important so that you get the case you really need.

It is not so much the case as it is the Power Supply that the case contains.

But I guess you are correct in away. An ATX MB would not go into an AT case. Again it may only be the PS that is different.

did the PSU on the ATX case include both sets of connectors ?

The cases I got did not. The case would take either MB but the PS connectors were for one of the other.

The last ( ATX case ) that I just got has both ATX and the PS4 ( or whatever it is ) extra connector on the PS.

Also the new ATX case has a AMD Certified PS in it. I made sure of that.

But get this. MY Soyo Motherboard will take either an AT or ATX PS. It has both connector on it. ( on the MB ) But not the PS.

So all in all it is tough to says Yes or No to what is what. Way too many variables.

But the main thing I believe would be to get a case for the MB.

AT for AT. etc.

That is why I am buying most of my stuff lacally. I see what things look like before I purchase them.

BillyBob