PCI-Z is a free software that gives detailed information about unknown PCI devices. It is light in weight and designed as a system utility for PCI-E, PCI-X, etc. devices.

PCI-Z is fully compatible with Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8, Windows Server 2000, Windows Server 2003, Windows Server 2008, and Windows Server 2012. It also fully supports both 32-bit (x86) and 64-bit (x64) Windows. However, the software does not run on Windows 95, 98, or ME. By default, it does not require any library, Visual Studio C++ redistributed, .NET platform, Java, or WMI, so it can be used even on Windows editions such as Bart PE.
Its installation process is remarkably easy to handle, as there is no configuration needed for the software to operate. Just download the file, run it, and wait for the report. Then, you can right-click on the line to view options like copying all data or just a fragment or export the whole list.
In summary, PCI-Z is a must-have utility for Windows users looking to access vital information about unknown hardware on their PC. It's lightweight, easy to use, and requires no complex installation.
Version 2.0: Significant code changes and speedups, improved pci.ids database handling, support for online verification, verbose PCI device status, various other code improvements