I got one of your SC742I-450 chassis. The power supply has 24-pin connector and doesn't match with Intel Motherboard's 20-pin ATX power header. Is there an adapter?
It's ok to use the 24-pin ATX SSI power connector in motherboard that has 20-pin ATX power header as long there is no large components next to the connector which may potentially interfere with 4 unconnected pins.