pci slotPCI SLOT COMPUTERS · We sell NEW computers with PCI slots. · Our computers are compatible with new and older operating systems such as Microsoft Windows XPLearn what PCI slot is, how it works and what are the main types of PCI slot (64-bit, 32-bit, PCI-X and PCI-E). Also, explore the history and evolution of PCI slot from 1992 to 2004.