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.
Mini-keyboard MIDI controller (25 note) with audio I/O, 2 analog input (1 XLR mic, 1 balanced 1/4" TRS, or 2 balanced 1/4" TRS), 2 analog output (2 unbalanced 1/4"), audio and MIDI interface, S/PDIF, headphone out