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PCI Express to PCI/PCI-X Bridge Specification 1.0

This specification facilitates in-the-box I/O expansion using the PCI-SIG family of technologies, top to bottom. The specification is compatible with existing PCI software/firmware interfaces and defines scalable features for designing large, complex systems, while providing performance optimizations to enable implementation choice and flexibility.

Be sure to check the list of PCI Express ECNs for the latest updates for this specification.