I have an asus P4S533 Mobo and a Future Power 500 watt power supply. My powersupply has 3 connectors. In my motherboard manual, it points out the three points for connecting the power supply and the plug names: - 20-pin atxpwr1 - 4-pin atx12v1 - 4-pin aux12v1 I can connect the 20-pin atxpwr1 to my mobo, and I can connect the 4-pin atx12v1 to my mobo. My problem is, I don't have an AUX12V1 to connecter on my powersupply! On the box is said it's for Pentium processors and P4 ready. It also says that it supports AMD Athlon processors. Where the aux12v1 is supposed to be, it has this flat white connector with many holes for pins. Is that for an AMD Athlon processor? Here's what it says from the manual: 13. ATX power connectors (20-pin ATXPWR1, 4-pin ATX12V, 4-pin AUX12V1) These connectors connect to an ATX 12V power supply. The plugs from the power supply are designed to fit these connectors in only one orientation. Find the proper orientation and push donw firmly until the connectors completely fit. In addition to the 20-pin ATXPWR connector, this motherboard requireds that you connection the 4-pin ATX +12V power plug to provide sufficient power to the CPU. Note: Make sure that your ATX 12V power supply can provide at least 8A on the +12V lead and at least 1A on the +5-volt standby lead(+5vSB). The minimum recommened wattage is 230W, or 300W for a fully configured system. The system may become unstable and may experience difficultly powering up if the power supply is inadequate --------- Do you see the second paragraph? It only mentioned that in addition to the 20-pin ATXPWR connector, that the motherboard requires a 4-pin ATX +12V(If I'm correct, I have this one connected. It's the one shaped like a box instead and closest to the CPU.). Does this mean I don't have to connect anything to the AUX12V1? Or does this mean I'll have to get another powersupply?

Ityu, Don't panic. :) I understand your your question and I can safely tell you that you do not need to connect to the AUX12V1 connector, because I have the same type of PSU in my computer. As for the motherboard - not the same as yours, but my also has a AUX12X1 connection. I don't even use it and my system runs fine. AUX12V1 is exactly what it states. An Auxilury power connection. In other words a back power connection.