My new build has a ANTEC 300 case and a ASUS P7P55D LE motherboard. The Asus has two fans built in to the case at the top and rear. I have added two more 120cm fans at the front of the case. On my motherboard, there are three fan connectors (excluding the CPU fan connector) and these are marked as PWR-FAN, CHA-FAN1 and CHA-FAN2. I assume that I connect my fans to these connectors but which fan goes in which connector? Also this would leave me with one of the front fans unable to be connected to the motherboard. So would I connect this fan direct to the power supply?