Thank you all for your answers! One more question please, i have 3 avalon741. As you know they dont have a power button. If i want to turn them off which is the best way tp do it? Should i turn of first the power supply?
Look at it this way your PSU is your on/off button for the Avalons, in the same way you could push the power button on your PC. There is no shutdown feature to idle in the way you would choose shutdown for your PC. Again this is a feeling I remember having myself when the first time I wanted to shut things down, you eventually get past the small hurdles.
Good luck.
(Moderator's note: This post was edited by frodocooper to remove an off-topic portion of the post.)