Creative Labs A40. System type: 2.0 system, Recommended usage: notebook, Speaker placement: Portable. RMS rated power: 1.6 W, Frequency range: 100 - 15000 Hz, Signal-to-Noise Ratio (SNR): 70 dB. Connectivity technology: Wired, Speaker interface type: USB. Width: 70 mm, Depth: 155 mm, Height: 85 mm. Dimensions (WxDxH): 70 x 155 x 85 mm, Power source type: USB