Power supply!?

[Engagechad]

Hey guys, I need some help
I was starting to build my computer and i ran into a problem
-I installed the cpu
-I installed the fan/heatsink
-I installed the memory
-mounted the motherboard to the case
Then I was going to attach the power supply....
The MB that I have (ASUS A8N5X) calls for a 24 pin power hookup but the cable that I have coming from the Power supply is only 20 pins...

I'm pretty sure this means a need a new power supply but I just wanted to get some opinions on what i did wrong when purchasing this stuff and what not...

here are links to the stuff i got

http://www.newegg.com/Product/Produc...82E16811147001

http://www.newegg.com/Product/Produc...82E16813131569

Thanks in advance

[Alaron]

The quality of that Rosewill power supply is questionable. Since you are still in the process of building, I would replace it now with this: http://www.newegg.com/Product/Produc...82E16817103937 which has 24pins and more importantly, is much better quality.

[Engagechad]

thanks dude, I'll order that power supply

[gary_hendricks]

Yes you have to be careful about power supplies in general. They tend to give very funny wattages especially if the brand is not good. If you need to get a good power supply, then you should always go for a brand name and check (and double check) the wattage with the retailer.

I've been tricked a number of times because I wanted to save money on the power supply.

Incidentally, this article may help you out if you're trying to install power supplies:
http://www.build-your-own-computers....er-supply.html