Using an AT form factor power switch with

[Philippine Mango]

Is there any way I can use an AT form factor power switch with an ATX form factor motherboard (would use ATX PSU). Since the ATX form factor is much simplier and required only two connectors I'm wondering how you would use an AT form factor power switch which has 4 lines. Whats the reason why the AT form factor switch has 4 lines, do I need only two? Please clarify this, thanks.

 

[stevty2889]

How in the world are you planning to use an AT form factor power switch, with an ATX power supply?? ATX uses a momentary switch that connects to the motherboard. AT has a power switch directly connected to the power supply..

 

[Philippine Mango]

Take one (pair) of wires from the AT power connector and hook it into the motherboard where you would normally hook up ATX Power switch. Just wondering if it's possible, maybe combining the wires?

 

[LifeStealer]

I wouldn't touch that, the switch actually uses 120v AC to turn the PSU on. It doesn't use DC voltage at the switch. Plug it in, lick your fingers and touch it if you want. That should keep you from doing that again.

The switch will work on 12v DC though, not sure how you would wire it up or what it would be rated at in DC if you don't know the AC rating.

 

[Philippine Mango]

Remember I would be hooking the switch into the motherboard and not the PSU, I mean the switch is essentially a regular switch (press in and comes out anyways). The switch acutually came from a motherboard/psu combo where the switch hooked into the motherboard (like ATX but clearly a AT mobo) and the Power supply also hooked into the mobo. The mobo died and now I have this great low form factor case I want to use with another motherboard (LPX form factor). Gotta use the same switch so I asked for an LPX form factor motherboard in sale/trade and only found an ATX board. So I'm wondering what I should do.

 

[LifeStealer]

You have a switch on your main rig? Pull out and compair. Its just we have no idea what its actually rated for. You might want to run down to the shack and see if you can find something similar there. If you have nothing better to do go out to your car and put a lead on one of the pins then use a meter to see what does what.

 

[Philippine Mango]

I can read you what it says on the top of the power button.

CANAL PSD - 1
7.5A 250VAC TV-5

5a/80A 250V~,u T85

10A 250VAC TV-5

 

[LifeStealer]

Alright someone correct me if I'm wrong but on ATX theres just two leads going to the switch via the mother board. One hot, pressing the switch opens the circuit and starts the board up. I'd pull my case out and check but.. well that would involve work and its 5am

 

[Philippine Mango]

Yes your absolutely right and since this has 4 I'm wondering what I should do. here is the link where I requested for an LPX form factor board. http://forums.anandtech.com/me...5&threadid=1478330

 

[LifeStealer]

All you would have to do is put 12 to a lead, take a tester (You can just use the lighbulb type from an auto store) and see if it supplys current on another part of the switch. If it does then thats all you need. Find the switch pins on your mobo and you're set. All you need to do now is find a plug (The shack may have one [Think it does I believe I saw one]) or find another way to connect the two wires to the pins. Solder the leads connected to the mobo to the corrosponding leads off the switch.

 

[Googer]

http://pcpowerandcooling.com/p.../indexatxtoatcable.htm

 

[Philippine Mango]

I could use this type of power swich also but wondering if it could work with an ATX PSU. It has 2 leads so it might work, dunno.

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[Philippine Mango]

Originally posted by: Googer
http://pcpowerandcooling.com/p.../indexatxtoatcable.htm

I love you, and no not in a gay way....:thumbsup:

 

[LifeStealer]

Without knowing what the draw would be for the switch I couldn't tell you what the amperage rating for it would be on 12v DC but I don't believe it would be enough of a draw to do anything to it. (Should be rated at like >.6amps DC)

 

[Philippine Mango]

Originally posted by: Philippine Mango
I could use this type of power swich also but wondering if it could work with an ATX PSU. It has 2 leads so it might work, dunno.

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This one is a different switch then the one I was talking about. If I could get this switch it would also work.

Here is the initial switch I was talking about.

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[JimPhelpsMI]

Hi, This applies to the usual switch for AT machines. You can use the top or bottom pair of terminals and leave the other pair empty. You can press the switch on then off to start the PS. If you remove the switch and look closely at the little wire dingus as you flip it you will see how it locks in each position. Tear the wire dingus out and you will have a momentary switch. The easiest way is to use the RESET switch for the start switch. You don't really need a RESET anyway. Some MBs don't even have one. Luck, Jim

 

[Philippine Mango]

Originally posted by: JimPhelpsMI
Hi, This applies to the usual switch for AT machines. You can use the top or bottom pair of terminals and leave the other pair empty. You can press the switch on then off to start the PS. If you remove the switch and look closely at the little wire dingus as you flip it you will see how it locks in each position. Tear the wire dingus out and you will have a momentary switch. The easiest way is to use the RESET switch for the start switch. You don't really need a RESET anyway. Some MBs don't even have one. Luck, Jim

So I could just hook up the two top terminals or the two lower ones, remember if you look at the pictures it's a push button and not a flip switch like on my AT Case (another computer).