PCI
- How to use Registry Editor to identify an unknown PCI device
http://support.microsoft.com/kb/298837/
This article describes how to identify and locate vendor information for a device that is displayed as Unknown Device on the Device Manager tab in the System Properties dialog box. This method can also be used to identify an unknown display... - MS: PCI Technology
http://www.microsoft.com/hwdev/bus/pci
Provides information, specifications, and white papers on Peripheral Component Interconnect (PCI) architecture and the PCI bus - PCI Vendor and Device Lists
http://www.pcidatabase.com/
This page is primarily intended as an engineering resource* for people who need to deal with computers built around the PCI bus. It's reason for being is that there is no other centralized database of PCI device IDs. - PCI-SIG
http://www.pcisig.com
The PCI-SIG provides a forum for its 800+ member companies, who develop PCI products based on the specifications that are advanced by the PCI-SIG.