If you want to have the full control of your computer, you ought to know which devices are installed in your machine. Independent of the installed operating system the PCISniffer displays the PCI header data of all PCI devices on the BUS unaltered.
PCISniffer scans all PCI buses of your PC and automatically detects which buses and devices are present. You can easily browse the detected devices and list all functions of these devices in a detailed display. Since no other operating system will be booted, there is no possibility for it to alter the configuration, allowing you direct access to the raw data, making it possible to detect and solve hradware resource conflicts.
Even if your computer runs without any problems, it is often interesting to know which devices exactly are installed. Besides the not very descriptive PCI numbers you can learn the models and vendors of your devices; the complete list of installed PCI devices or parts of it can be exported into a PDF file on a USB drive.