Dell Optiplex 7010 font panel pinout

Good afternoon, recently i go a Optiplex 7010 case and i got problems with the connectors of the case.

The shape and size are different from the standards for USB 2.0, HDD led and front audio interface (a all in one connector).

I would like to have the pin-out of the connector to mod the connections to use them with a different motherboard (dell XPS 8300(the connections are standard)).

I already managed to have the usb 3.0 working with the motherboard and the on/off button, as well as the front power led.