Dell optiplex 790 motherboard in new case ?

clutchc

Titan
Ambassador
It is a std mATX (or ATX) MB. There should be no reason it won't fit. Remove the Dell I/O backplate to use in the new case.

If you have the full size Dell case, the PSU should be a std ATX PSU. It will fit fine in a new case. But if you have the slim-line Dell case, the PSU will be a small form factor PSU. That won't fit.