[. . . ] Getting started with Première utilisation Logitech® Speaker Lapdesk N550 Store the USB cable on either side of the N550 using the convenient cable clip. [. . . ] The USB cable must be plugged all the way into the laptop's USB port; the laptop must be powered on. Try pressing it again to see if that will restore the volume to a more normal level. Close all media applications and make the N550 the default audio device: Windows® XP: Go to Start/Control Panel/Sounds and Audio Devices/Audio tab. In the Sound Playback/Default Device window, choose Logitech Speaker Lapdesk N550. [. . . ] Logitech assumes no responsibility for any errors that may appear in this manual. [. . . ]