Upgrading

I've been doing some work to my computers lately. I am trying to upgrade them so that they run the best that they can run. The computers aren't new but they still run really really well. Last year I bought this usb pci card so that my desktop would have some USB 2.0 ports. I actually bought it so I could hook up my iPod so I would have faster transfers. Well I hooked it up and it didn't recognize my iPod. That was the only reason I got it so I just took the PCI card out and put it somewhere. Now I'm willing to give it another try, especially since I have a much greater understanding about computers now. The problem is I can't find it. I usually never throw things away. So I am really confused. I have no clue where is can be. It sucks because I don't feel like buying another one because I know it has to be somewhere and I will probably find it as soon as I buy it. Oh well, just ranting.
Thank you for reading.
Phil