Power Switch Ground

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. Stuart

That may be a logo from the manufacturer. Just a guess.

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.

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 (-)

Do you mean the power connection on the back of the PSU? The symbol could indicate a ground, depending on how it's used: http://library.thinkquest.org/10784...

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?