This is the detail page for one of over 225 audio interfaces covered in The Computer Audio Interface Guide, which also lists where to buy this interface used.
4 channel 96 kHz analog input (2 XLR/TRS combo, 2 RCA), 8 channel 192 kHz analog output (2 XLR, 2 RCA, 2 TRS stereo), headphone amp, S/PDIF coaxial digital i/o.