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Only one MOBO pin for Pwr button front panel

Sonikku

Sonikku

Lifer
I recently got a Asrock H77M

http://www.newegg.com/Product/Produc...82E16813157303

http://www.asrock.com/mb/overview.asp?Model=H77M

But when I look at the manual, it's front panel thing only seems to allocate one prong for my cases Power Button. My computer case cap that hooks up to it's power button on the chassis is a 2 prong cap with a + and -. (and all other motherboards I've owned had a + and - prong for the power button cap) but this is the first one I've seen that only seems to have one. Will my case work with it or do I have to get a newer one?

Edit: I notice that while my old motherboard manual lists a + prong and a - prong for the power button header that the manual for the new motherboard has one prong listed for the power button and has a GND prong right next to it. Is the GND prong for the - end of the power switch header?
 
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Looking at the photo on the Newegg page, the pin outs look pretty standard. Using a number system like:

1234
56789

with each number representing a pin, the case power button pins are 3 and 4. Pin 9 is not used.

Hope this helps.
 
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Looked at your mb's manual. On page 33, it clearly shows a PLED+ and next to it a PLED-, so you do have both prongs. They may not be silkscreened on the board, but they're there.
 
I know that, I'm not worried about the power led light on the case though, I did notice that had a + and - prong. It's the Power switch, I am worried about. The header you hook up that let's you turn on the computer with a push of the biggest button on the computer case. I did look up connectors on google though and one page said that the white or black intertwined wire is always the grounded while the colored wire intertwined with it is power. So I suspect the "GND" prong it mentions in the manual is in fact the second prong I need to hook up the power button header too. That would also corroborate what Mono is saying. Thanks for taking the time to look that stuff up 🙂
 
Sophitia said:
I know that, I'm not worried about the power led light on the case though, I did notice that had a + and - prong. It's the Power switch, I am worried about. The header you hook up that let's you turn on the computer with a push of the biggest button on the computer case. I did look up connectors on google though and one page said that the white or black intertwined wire is always the grounded while the colored wire intertwined with it is power. So I suspect the "GND" prong it mentions in the manual is in fact the second prong I need to hook up the power button header too. That would also corroborate what Mono is saying. Thanks for taking the time to look that stuff up 🙂
Click to expand...

Monoglot is correct. For the power switch, it doesn't matter what the polarity is because it's not an actual switch but, a logical switch.
 
MagnusTheBrewer said:
it doesn't matter what the polarity is because it's not an actual switch but, a logical switch.
Click to expand...

What's you've said is correct, but not for that reason. "actual switch" vs "logical switch"????

LEDs have polarity because they are light emitting DIODEs. A diode only allows electricity to flow in one direction. A power switch is just a momentary closing of the circuit. It's like installing a jumper. There's no directionality to it because it's just, in essense, a piece of copper connecting the two prongs.
 
Ferzerp said:
What's you've said is correct, but not for that reason. "actual switch" vs "logical switch"????

LEDs have polarity because they are light emitting DIODEs. A diode only allows electricity to flow in one direction. A power switch is just a momentary closing of the circuit. It's like installing a jumper. There's no directionality to it because it's just, in essense, a piece of copper connecting the two prongs.
Click to expand...

I said for the power switch. I didn't say anything about leds. An actual switch has power running through it supplying whatever it controls. A logical switch just completes a circuit and does not have a power supply running through it as you've also said.

Let's not get into a nerd fight and concentrate on helping the OP, m,kay?
 
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