Dell Stereo USB Slim Soundbar SB521A for monitor, Nominal Output Power: 3.6 Watt, Amplifier: Integrated, Speaker Type: Active, Frequency Response: 180 - 20000 Hz, Operating voltage: 5V, Dimensions (WxDxH): 29.8 cm x 1.8 cm x 2.4 cm, Weight: 114 g, Connector Type: USB (power only) (4 pin USB Type A (power only)), Security loop, Power indicator, Design Features: Built-in magnetic mount, Recommended Placing: Under- the-monitor, Designed For: P2721Q, P3221D, P3421W, U2421E, U2422H, U2422HE, U2722D, U2722DE, P2222H, P2219H, P2422H, P2419H, P2422HE, P2722H, P2719H, P2722HE, P3221D, P3222QE, P3421W, 3y warranty