Meridian - Explorer USB DAC Inputs USB mini type B. Outputs 3.5mm combination analogue/digital jack with mini Toslink digital optical &lt;96 kHz output and Construction Extruded Aluminium shell with moulded plastic endcaps and rubber foot. Implementation USB audio class compliant 2.0 HS 480Mb/s bandwidth. Asynchronous: device is the clock OS requirements Macintosh OS X 10.6.4 (Snow Leopard) or later Windows XP SP3, Windows 7 SP1 or Windo