Power Switch Ground

August 3, 2007 at 13:26:09
Specs: n/a, n/a
This is so trivial I hate to ask but, on the back side of the connector plug-in for the Power Switch there is a tiny triangle. Does this indicate the GND (ground) side of the connector?

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August 3, 2007 at 13:38:01
Assuming you are using an ATX case and motherboard then no. The power switch is a simple push to make, release to break switch that connects to two pins on the motherboard. You can plug it in either way round.


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August 3, 2007 at 13:45:38
That may be a logo from the manufacturer. Just a guess.

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August 3, 2007 at 13:50:55
If you are talking about the front panel of a common modern system switch then no. A switch doesn't have a ground.

You would NEVER want to switch common line (which is the return line in an AC circuit.

As the the markings I have seem many. My guess is it is the common pole. The common pole of a switch is of no use really on a switch with only two connectors.

I read it wrong and answer it wrong too. So get off my case you goober.

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Related Solutions

August 3, 2007 at 14:22:23
As the others have stated, there is no ground on an ATX power switch.

But to answer your question about the triangle/arrow, it designates the power (+), not the ground (-)

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August 3, 2007 at 21:41:23
Do you mean the power connection on the back of the PSU? The symbol could indicate a ground, depending on how it's used:


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August 4, 2007 at 05:01:35
The reason I asked is because the MOBO manual shows a diagram for this connector panel where the connectors for HDD LED, PWR Switch, Reset Switch all connect. Further, the diagram shows a specific orientation for the connectors, that is, it shows a ground position. Now, on one side of the connect is a label such as "PWR SW" and on the back is a tiny triangle and the letter "E". As Jam pointed out, the triangle indicates the power side which means the other side is the ground, therefore giving the plug a PWR/GND orientation. But if a two pole connect has no ground, then why does the manual specify a specific plug-in orientation for these connectors? Bottom line: does it matter which way the connectors are attached as long as they are on the correct set of pins?

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August 4, 2007 at 05:54:07
Yeah, on the motherboard it's use would be as a pointer to the positive lead.

For the reset, power and KB lock connections polarity doesn't matter so you wouldn't have to follow the +/- orientation. The LED's are polarized so their connection orientation does matter.

Arrows are also used as pointers to the #1 pin for the floppy and HD connectors.

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