Features: 1.Function: A PCI Express to PCI bridge that allows the PCI bus to be used with a high performance PCI Express network. 2.Applicability: Support for Windows 8.1 for Windows 8 for Windows 7 Vista Xp 2003 2000 NT Vista for Linux. 3.Exquisite Craftsmanship: Exquisite craftsmanship, improved design, more durable and longer service life. 4.High Efficiency: This pci express card effectively reduces interface interference and line loss, ensures data reliability, and improves work efficiency. 5.Note: Many existing chips and entire subsystems can be used without modification to the PCI Express motherboard. specification:Item Type: PCIE X1 to PCI Riser Card Material: PCB Interface Type: PCIE X1 To PCI Performance s: PCI Express Single Lane Port Built in Power Supply, No Additional Power Connection Required PCI V.3.0: 32bits, Up To 66MHz Low Power Consumption 400mW Compliant With Version 1.0, Compatible With Version 2.3 PCI Express 2.5Gbps Database Transfer PCI Express Base , Revision 1.0a PCI Express To PCI Bridge , Revision 1.0 PCI Express Card Electromechanical , Revision 1.0a Operating System: for Windows 8.1 for Windows 8 for Windows 7 Vista Xp 2003 2000 NT Vista for Linux PackageList: 2 x Riser Card 2 x Screw 1 x Standoff