Can a PSU with +12V1 and +12V2 work on my motherboard that only has 12V1?

Guys i just bought a 560W power supply and am trying to connect it to my motherboard, but i noticed that my old power supply has just one connector for +12V and the motherboard only has a single +12V1 slot to accept it. But my new power supply has 12V1 and 12V2 connectors. The PSU has a wire with 2 identical 4-pin connectors that each seem to fit in the 12V1 slot but don't quite lock in place. I was wondering if those are the 12V1 and 12V2 connectors... and am i supposed to be able to safely connect just one of them to my motherboard's 12V1 slot. Is that how it works?

My motherboard is an ECS 945GCT-M2 / 1333 with a core 2 duo E7200 processor.

You've got your terminology a bit screwed up - 12v1 and 12v2 are rails, not connectors. It sounds like you're talking about the P1 connector and probably the P4 connector. And your post doesn't make too much sense to me.

Do a pin count on both the power supply and motherboard and get back to us. Or give us the model of the "new" power supply you have.

ok maybe i got confused, the PSU advertises that it has dual rails +12V1 and +12V2 output. I'm talking about it's 4-pin 12V connector, which the new PSU seems to have two of, while my old PSU only has one of. So i don't know if my motherboard needs another socket for the second 12v connector. Here's a photo of my mobo: ECS 945GCT-M2

To the bottom left of the CPU socket is a square white 4-pin socket that has the label "ATX 12V1" right under it. That's where the old PSU had a wire connected to. The new PSU has one wire with two 4-pin connectors branching out of it. I'm guessing those are 12V connectors, but again i don't know if they both need to be connected, because my mobo only has one 12V socket.

It's an ACBEL iPower 560

Here it is, i can't seem to find this model on it's own website, but here's it's specs from another site:

http://www.extremepc.co.nz/index.php?main_page=product_info&products_id=3461

thanks!

Your new supply has a 24 pin connector and two 4 pin connections, but your mother board only has a 24 pin connection and one 4 pin connection correct? If this is the case, don't worry about your power supplies 2nd 4 pin connector. Some newer mobo's require two 4 pin connections to the board this is why your supply has them.roulettethedog

Wow thanks! i guess that's all i need to know. I just wanted to make sure i don't fry my investment. :)