Terratec Aureon 5.1 USB MK II. Audio quality: 16 bit, Audio output channels: 5.1. Host interface: USB. Minimum RAM: 128 MB, Minimum processor: 600 MHz Pentium 3 / AMD Athlon CPU, Minimum hard disk space: 60 MB. Package dimensions (WxDxH): 200 x 235 x 65 mm, Package weight: 730 g