No power adapter. The Bose Companion 2 Series II Multimedia Speaker System Set in Silver Gray features a sleek rectangular design and a 2.0 channel system configuration. With audio inputs for AUX, this portable speaker system is wired and perfect for gaming with its unique features. Made by the reputable brand Bose, this set includes a pair of speakers with dimensions of approximately 6 inches in length, 7.5 inches in height, and 3.5 inches in width. This multimedia speaker system is a great addition for enhancing your audio experience on your computer or gaming setup.