Yamaha YSTMS201W 30-Watt 2.1 Computer Speakers (3-Speaker, White) 3-piece multimedia system for PCs, portable audio players, games, and keyboards Patented Active Servo Technology (YST) produces deep, powerful bass Slant-baffle satellite speakers guarantee optimum listening position Full magnetic shielding prevents monitor distortion Convenient large volume control and power switch on 1 satellite