Terratec HeadSet Master 5.1 USB. Device connectivity: Wired, Cable length: 2 m. Headphone frequency: 20 - 20000 Hz. Weight: 450 g. Minimum RAM: 256 MB, Minimum processor: 1 GHz Intel Pentium III / AMD Athlon. Minimum system requirements: -USB -CD-ROM, Compatible operating systems: Windows 2000, Windows XP