Bose Companion 2 Series III Multimedia Speakers - for PC (with 3.5mm AUX & PC input) High-quality audio performance, with clear sound at any volume. Use the auxiliary input to bring Bose performance to another audio source such as your iPhone or iPad. Upgrade your sound-and your experience-with Bose Companion 2 Series III speakers. High-quality audio performance, with clear sound at any volume Play an additional device-just connect to the auxiliary input Volume control/headphone jack on front of right speaker Operating compatibility: Mac, Windows XP