you need extra power to the card after looking at the card in question, you need to add a 12v molex connector to it. What is that you ask? you see those white connectors that are connected to CD-roms and ATA Hard drives? they look like these: lol, molex connector now you will need one of those available. If you don't, you'll have to upgrade your power supply... Speaking of, you will NEED AT LEAST A 350W power supply in order for it to work, and even then, if you have a lot of drives, you should go for 400-450W, just to be sure. You can find out how much your power supply is rated by looking inside the case and on the power supply itself. It might be on the bottom, so you might have to take it out. if it's < 350, you'll have to shop for a new power supply to feed the power hungry video card. I recommend Antec, because they make good crap power supply wise anyway, good luck with the upgrade