Tektrum PCIe PCI-Express to PCI Adapter Card Supporting PCI Cards in a Desktop Motherboard PCI-Express Slot Engineering Instantly add 1 PCI slot for desktop PC with PCI-Express slot Unique bracket design allows a low profile/half-height PCI card to work seamlessly in a PCI-Express based expansion slot 4-pin power connector available for universal voltage PCI cards (3.3V/5V) One PCI 32-bit Bus slot on the top of the card; One PCI-Express slot at the bottom of the card Compliant with PCI-Express to PCI/PCI-X Bridge spec 1.0; No driver or software installation; Easy Plug and Play Installation; Easily fits into standard PC cases