Install half heightlow profile pci interface cards in a standard pci express expansion slot this pcie to pci adapter card lets you use low profile pci expansion cards in a server or desktop motherboard pci express slot compliant with pci express specification 10a and pci specification 22 the adapter card connects through a pcie 1x slot to provide a low profile pci slot in its place a spare full size bracket for pci express card is also included for use in larger desktop or server pci expr