M-Audio US41750 Audiophile 192 Hi-def Aud Card Up to 24-bit/192kHz audio2x2 balanced 1/4" TRS analog I/OS/PDIF digital I/O with 2-channel PCM and surround Direct hardware Input monitoring via separate balanced 1/4" TRS monitor inputs16-channel MIDI I/OSCMS copy protection control Software routing of inputs and outputsDigital I/O can be routed to/from external effectsASIO, WDM, GSIF 2 and Core Audio driver support64-bit driver support for WindowsPCI 2.2 compatibility