How can i check which type of case i have: AT or ATX??

[Lombardaga]

well...

 

[Wingznut]

Not a sure-fire method, but probably the easiest...

Is your power switch a "hard" (two separate positions), or a soft switch.

AT = Hard switch.

 

[ViRGE]

Actually, there's an easier method. If the parallel port is built right on to the mobo, it's ATX. Otherwise, it'll be attached to the mobo via a ribbon cable, and be AT accordingly.🙂

 

[Zeeliv]

Or look on the back and check how many expansion slots there are. ATX normally has 7, AT normally has 8.

 

[odog]

ATX has all the conectors in one retangular bank.. ie the ps-2,printer,serial,USB etc etc are all in the same block of connectors.... AT on the other hand has all the connectors on seperate brackets that screw in like a PCI/ISA card.

 

[The Stigenator]

yeah, just see if you got PS/2 ports, for mouse and keyboard - look like small round ports in a one area, where you have the 9 pins and the 25 pin ports.

If you got the ports in this order from top to bottom you got ATX:

Two small round port next to each other
2 small black USB ports under the 2 round ports
Two 9 Pin Male ports (rectangle type) one blow the other, under one of the above left round ports
Under teh above round port is a rectangle type female 25 pin port

then you got a ATX case..

If you got one LARGE 5 cent size port for your keyboard, with 5 small lines on the inside, then you got a AT case.

 

[Dufusyte]

Look at where your keyboard cable plugs into the back of the computer. If the plug is a rather large circle, about the size of a penny in diameter, then it is an AT connector (and presumably an AT case). If the connector circle is a circle the size of a tack, then it is a more modern serial connector typical of an ATX case.

 

[Workin']

I have an old Socket 4 (original 60 MHz Pentium) mobo that has PS/2 connectors for mouse and KB built onto the board like an ATX but it is definitely an AT board.

A sure test (but obviously not the only one) is to look inside the case - if there is a THICK wire going from the power switch to the power supply, it is AT. If there is NO wire going from the switch to the power supply, it is ATX.