One simple question.. How do you tell ATX and AT cases apart? I have this hybrid mother board that was made in 1998 and it fits both ATX and AT cases I was wanting to maybe reuse the case if its ATX. http://www.mainboard.cz/mb/pcchips/m747.htm thats the mobo. If that helps any at all.

P4 2.6 Ghz
40 GB HD
256 MBs of DDR 333 RAM

What type of power connector does the case have? ATX is the one with two rows of pins. AT is two single row connectors that fit end on end.

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Teach him to fish and you feed him for life.

An ATX case generally has ONE power to motherboard connector, and normally has the newer "standard" layout punched in the back for the ports--kb/mouse close together, etc.

AT normally has a punch for the old LARGE DIN style keyboard connector, and has the aforementioned TWO power connectors.

If however you are looking at a used unknown case, there are weird proprietary cases, and some Comrapcrpsaps had incompatible power lashups, as well as some cases have weird motherboard mountings.

This thing has like two power cable things on one pin slot for the power. IF the power ( Look at my first post and go to the webbeie for a pic of the MOBO I currently have in this case) If the power on this mobo is the white things in the corner close to the processor.

P4 2.6 Ghz
40 GB HD
256 MBs of DDR 333 RAM

And I meant the power slot as the one slot not the one with two rows of pins on the mobo. So im gussing the case is AT which makes it useless to me..

P4 2.6 Ghz
40 GB HD
256 MBs of DDR 333 RAM

And my friend told me its ATX because the slots on the back are horizontal can anyone confirm that thatis a way of telling how its a atx case?

P4 2.6 Ghz
40 GB HD
256 MBs of DDR 333 RAM

On an ATX motherboard, several of the external connections are grouped in the left rear of the board. Connections for the monitor, Keyboard, mouse, USB, etc.
An ATX case has a special cutout for all these connections to fit in. An AT case will not.I think that's what your friend was refering to when he said:
"the slots on the back are horizontal "

noo I said like card slots for like the PCI slots and such things go horixontal.

P4 2.6 Ghz
40 GB HD
256 MBs of DDR 333 RAM

he said** sorry

P4 2.6 Ghz
40 GB HD
256 MBs of DDR 333 RAM

I'm afraid that you misinterpreted what he said.

Ham30 is correct. The picture you have the link to is an AT board---all you have to do to see that is look at the keyboard connector.

The power connector(S) on the motherboard are for BOTH the old at and atx style power supplies.

One thing that might be confusing you is the description of the board on that site:

"""Provides ATX Form card for 2x USB, PS2 mouse and fast IR Interface
Provides both AT/ATX power connector, and supports various features of ATX power, such as Suspend / Shutdown, Modem Ring On, and Alarm Wake Up"""

Just because it has a few features of the newer ATX boards does not MAKE it an ATX. The first part about PS/2 and USB is a little confusing to me, but what I'd guess is that somewhere on that board is a (some) connector(s) /header(s) for the USB and mouse ports. Some of these in-between boards had them, some did not. IF IF you can find the connector/adaptor that goes along, you may be able to get a PS/2 mouse and USB ports on this thing.

Make no mistake, though, this IS an AT board.

Okay lol Thanks for the help.

P4 2.6 Ghz
40 GB HD
256 MBs of DDR 333 RAM

Lets just go up from the processor slot. The first connector is for the floppy drive. The second is for an AT power supply, the third is for an ATX power supply and the last is for a keyboard.

You're using the AT connector (pwr1) and have an AT case/psu. If used in an ATX case/psu, you'd plug into (pwr2).

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A true AT case will have an AT PSU that's hard-wired to the front on/off switch. This switch may be the "rocker" type with actual on/off positions, or the "push" type that stays in when in the "on" position, & pops out when in the "off" position.

An ATX case has a "soft" on/off switch that connects directly to the motherboard.

But the back of the case is where you'll see the major difference(s)...

Here's the rear of an AT case:

http://blank.org/memory/img/forsale/pc-back.jpg

Here's the rear of a couple of ATX cases:

http://www.slcentral.com/cmi-case-review/smCase%20back.jpg

http://www.apactonline.com/Controls/Store/images/StorePictures/2347_BLACK_XWIN_BACK_50.jpg

your friend is wrong. just because the connectors for cards*pci slots* are horizontal doesnt make it ATX. i have an at mobo that has horizontal pci slots. Some AT mobos fit in tower cases like this one but most didnt. you mobo has connectors for both AT and ATX powersupplies so you could use eithr one. u could even mount it in an AT case but stick in an ATX powersupply

^(-.-)~~~]>:}>

Simply put by looking at the pic of the motherboard I would say NO get a new case.

Wow!!! that brought back memories i used to build loads of those at the one place i worked, used to get given all of those builds as no-one else liked doing them cos it meant a manual install of 9x rather than from a rig. They were a doddle to set up (jumperless) and could clock up to 800mhz :) stable shame about the crap SIS graphics tho but you used to be able to get a version of tht board with an AGP slot and no on board card.

We also built a lot of the socket 7 ones too.

most got built onto AT cases but some were built in ATX.

Woof

Curiosity may have killed the cat but at least the cat wasn`t bored