Hi, recently bought my first computer (used), I have question about what is installed in my pci slots. I have 3 pci-slots (1 open) on the two that have a card installed, I don't know what those cards are or what they do, although I think one of them is a "lan" controller or something like that. I use internet via wireless adapter. I would like to free up those pci-slots, but first I need to know what is in the pci slots and if I need them or not. Is there a way for the computer to tell me the exact hardware that is installed in my pci slots ? I tried "system information" via accessories but that didn't tell me. After I find out what's installed, I need to know what it does and if I should keep it installed, thanks!