No, I dl'd your board's manual and there is no 4-pin connector for power.
Your board is AGP and you're using a PCI graphics card. Most likely, your bios is defaulting to AGP. I didn't see any jumper settings to change graphics card to PCI so it will need to be done in bios.
Honestly, the easiest thing to do would be to get an AGP card. I bought a 64mb agp ATI card for under $30 on newegg for a friend's system.
You will have better performance with AGP also.
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