I have an Optiplex 760. I was looking at the back of the case for a power on/off switch. Although I didn't find one, I did see a very small push button.
When I push this button a green light comes on, and goes off again when I release the button. This is with the machine turned off. I haven't tried pushing it with machine turned on in case I break something!
Can someone tell me what this button is for, please?