- Virtual surround 5.1 DSP processor- USB 2.0 data interface- Powered directly by USB、 no other power source required- Features 3.5mm stereo earphone and microphoine jacks- Supports Window 98SE/ME/2000/XP/2003/Vista/Linux/Mac OS- Driver-free installation when used with?modern Operating Systems                                                                                                                                Dimensions: 2.01 in x 0.91 in x 0.51 in<br />Weight: 0.67 oz