The PPA International USB 6 Channel External Sound Card to an available USB port on your desktop or notebook PC, lets you add an optional 5.1 channel speaker system so you can listen to surround sound from websites and your DVD collection. If you use your PC for TV reception, this adapter is ready for Dolby Digital HDTV sound. Skype your friends and family.Plug n'Play allows you to connect the device to your PC right out of the box without having to read a long and boring instruction manual. There is also the feature of Hot Swappable, which you don't have to reboot your PC to connect/disconnect the external sound adapter. It is powered directly by an available USB port on your PC.