AIDA32 is a professional system information, diagnostics and benchmarking program running on Win32 platforms. It extracts details of all components of the PC. It can display information on the screen, print it, or save it to file in various formats like HTML, CSV or XML.
http://www.aida32.hu/aida-download.php?bit=32

Unknown Device Identifier enables you to identify the yellow question mark labeled Unknown Devices in Device Manager. And reports you a detailed summary for the manufacturer name, OEM name, device type, device model and even the exact name of the unknown devices. With the collected information, you might contact your hardware manufacturer for support or search the Internet for the corresponding driver with a simple click. With this utility, you might immediately convert your unidentified unknown devices into identified known devices and find proper driver on the Internet and contact the hardware device manufacturer or vender. Known devices recognized by Microsoft Windows will also be analyzed independent of the operating system.

http://www.zhangduo.com/udi.html