The new Devices and Printers folder shows you the installed devices that are connected to your PC, making it a handy way to check on a printer, music player, camera, mouse, or digital picture frame (just to name a few).
It's also the place to add a new networked or wireless device and troubleshoot problems with a device or printer.
To find out which devices are compatible with Windows 7, go to the Windows 7 Compatibility Center website.