Trouble installing new PSU

[howardphillips]

I just bought a Corsair GS700 (http://www.newegg.com/Product/Product.aspx?Item=N82E16817139024) so i can upgrade my graphics card. Didn't bother with the gpu yet, since when I start up my PC with the Corsair it comes on for one second and then shut off. The old power supply, a Huntkey HK380-12gp, still works fine so I figured either the new psu is faulty or I messed up with the connections. I wanted to ask before screwing around with it more, just to be safe.

I can't figure out what model the motherboard is, but it has a 24 pin slot and then another separate 4 pin, both of which the original psu connects into. Besides that, there's just a couple of sata connectors I need to plug in, which are easy.

The Corsair comes with a 20+4 connector and I'm confused as to whether I should detach it and put it into the separate slots or stick the whole thing into the 24 slot, leave the 4 pin slot on the motherboard empty, or maybe there's another cable with the psu I'm missing? I'm not really an expert and I looked around on the net for some info but I just want to make sure I'm getting this right before I mess something up or needlessly buy anther psu.

Thanks for your time.

 

[Sakkura]

The 20+4-pin plug needs to go into the 24-pin socket, and there's a 4+4-pin plug of which half needs to go into the 4-pin socket.

 

[howardphillips]

The 20+4-pin plug needs to go into the 24-pin socket, and there's a 4+4-pin plug of which half needs to go into the 4-pin socket.

Right, the Corsair comes with an 8 Pin EPS/ATX12V, I was just worried that it wouldn't be compatible with the 4 pin socket, but you say it's ok to just stick it in there halfway?

 

[Sakkura]

Right, the Corsair comes with an 8 Pin EPS/ATX12V, I was just worried that it wouldn't be compatible with the 4 pin socket, but you say it's ok to just stick it in there halfway?

Yeah, the 4-pin socket is an ATX12V socket. An 8-pin socket is EPS12V. The EPS/ATX12V 4+4-pin connector can be used for either, you just only use half of it for a motherboard with an ATX12V socket.

 

[howardphillips]

Right, the Corsair comes with an 8 Pin EPS/ATX12V, I was just worried that it wouldn't be compatible with the 4 pin socket, but you say it's ok to just stick it in there halfway?

Yeah, the 4-pin socket is an ATX12V socket. An 8-pin socket is EPS12V. The EPS/ATX12V 4+4-pin connector can be used for either, you just only use half of it for a motherboard with an ATX12V socket.

OK, great. I wasn't sure if it was safe or not because it's just an 8 pin thing, it doesn't seperate. I appreciate the help!