1. PCI Express Base Specifiction, Revision 4.0, Version 1.0 2. PIPE Specifiction for PCI Express (643108_PHY_Interface for the PCIe_SATA_USB32_DisplayPort_USB4 Architectures_Rev6p1.pdf) 3. PCI Local Bus Specifiction, Revision 3.0 4. PCI Bus Power Management Specifiction, Revision 1.2 5. PCI Express Card Electromechanical Specifiction, Revision3.0