A computer which has an ACPI compliant PCI-to-PCI bridge allows additional devices to be inserted, and allows existing devices to be removed or relocated without restarting the computer. A first PCI bus serves as a local bus, allowing a number of devices, including a PCI-to-PCI bridge, to be connected...http://www.google.com/patents/US6295566?utm_source=gb-gplus-sharePatent US6295566 - PCI add-in-card capability using PCI-to-PCI bridge power management
