[SOLVED] Is it possible to swap a dell optiplex PC into an XPS case?

Solution
That is a bit trickier to say. Probably not the power/reset. But the USB and HDD and Power on LEDs are somewhat more likely. Audio is hit or miss, they don't always conform to standard there either.

They aren't vital to system function though. Rear USB, Rear Audio, and you can wire up your own powerswitch (or repurpose theirs) just by putting it across the standby power pin on the ATX connector and a ground. (Or just straight short it out so the computer turns on when power is applied, you can then plug it into a powerstrip)

If you really want them to work I can maybe do a deep dive, but unless you have wiring experience, and want to give it a try, there isn't much point.

On newer Dell's they like to use Power/Reset/PowerLED combos...
That is a bit trickier to say. Probably not the power/reset. But the USB and HDD and Power on LEDs are somewhat more likely. Audio is hit or miss, they don't always conform to standard there either.

They aren't vital to system function though. Rear USB, Rear Audio, and you can wire up your own powerswitch (or repurpose theirs) just by putting it across the standby power pin on the ATX connector and a ground. (Or just straight short it out so the computer turns on when power is applied, you can then plug it into a powerstrip)

If you really want them to work I can maybe do a deep dive, but unless you have wiring experience, and want to give it a try, there isn't much point.

On newer Dell's they like to use Power/Reset/PowerLED combos that are proprietary. And usually use a smaller pin pitch than is typical on front header I/O.
 
Solution
That is a bit trickier to say. Probably not the power/reset. But the USB and HDD and Power on LEDs are somewhat more likely. Audio is hit or miss, they don't always conform to standard there either.

They aren't vital to system function though. Rear USB, Rear Audio, and you can wire up your own powerswitch (or repurpose theirs) just by putting it across the standby power pin on the ATX connector and a ground. (Or just straight short it out so the computer turns on when power is applied, you can then plug it into a powerstrip)

If you really want them to work I can maybe do a deep dive, but unless you have wiring experience, and want to give it a try, there isn't much point.

On newer Dell's they like to use Power/Reset/PowerLED combos that are proprietary. And usually use a smaller pin pitch than is typical on front header I/O.

OK, thanks for your help. I'll have another look at both pinouts and see what I can do
 
Yeah, finding high res images of the boards and the connectors, and where they go is pretty impossible. So you stand a better chance if you have both to look at. Occasionally people put the pinouts on the web, but not often.

Most recently I had to hotwire an Optiplex 9020 board to work in a standard case and with a standard power supply. I was able to wire up my own PSU adapter, but couldn't get the system to behave unless I shorted out the standby pin.