Mark Twain wrote:
I just checked the PSU again and saw it had a switch
whereas the back plates for the 8500 and 780 are both
different. On the 8500 the plug comes out on the left

http://i63.tinypic.com/347jogk.jpg

On the 780 it comes out on the right and neither have
switches. Now what?

http://i63.tinypic.com/4ij3ao.jpg

Robert


It's OK for a PC without switches on the back, to receive
an ATX supply with a switch on it.

You examine the border area around the faceplate, and
see if any of the metal detail on the computer case, conflicts
with a feature on the new PSU. To me, it looks like the
screws on the faceplate area, are in the standard locations.

For the picture of the 780, it was hard to see the screws
against the black finish, but I think they're all in the
standard locations.

The 780 power supply appears to have a self-test button,
as well as a green LED to indicate the test was successful.
I don't see the word "TEST" on the button at all, but I'm
guessing that's what it is for.

Your old supplies are auto-switching (110/220V). If the new
supply has one of those red sliders on the back for voltage,
then that's not a problem as long as it is set correctly
for the expected voltage.

The only other issue with Dells, is the non-standard wiring on
a couple years of much older machines. I think we checked for
that on a previous occasion.

I think you're still in good shape, and just run your
eyeball over the border area framework and make sure there
aren't any metalwork conflicts. I don't know if the
standards, such as they are, allow all those metai "detailings"
around the edges like that. The case makers take a lot of
chances with their messing about.

Paul