Take a look in the manual for the motherboard itself. There should be a section for pinouts for where you have the reset, power, reset, speakers and all that. It will show you were within the motherboard it can be connected to it. And basically plug it right in there. have seen on many home made machines where they are usually located at in there. Take a look within there it should help you out in getting that small speaker hooked up inside the casing there.