Hi everyone, i'm get a dell Optiplex 990 refurbished motherboard to insambly a office computer, the problem is that i buy the parts one for one, and the case isn't the original dell optiplex case, somebody have a manual or schema where can i see the order of POWER SW connectors on the motherboard? or somebody knows how the POWER SW connectors must be in the motherboard?
If you have the parts already to build the system, best strategy: buy an ASUS, MSI or Gigabyte mainboard to go with them. The power switch is not the only hurdle you're going to face - unless you purchased a Dell heatsink assembly, that's going to be another one.
You can still get standard LGA1155 boards that will take the Sandy Bridge Core CPUs the 990 does.