M-Audio M-Track Interface 2 Input Midi

M-Audio M-Track Plus 2-Channel Portable USB Audio & MIDI Interface

M-Audio M-Track Plus 2 USB Audio / MIDI Interface - 2 Channel

M-Audio M-Track Duo USB-C Audio Interface 2-Channel - BROKEN PREAMPS

M-Audio M Track Quad Digital Audio Interface - UNTESTED FOR PARTS

M-Audio M-Track Plus 2x2 Audio Interface UNTESTED as Is

M-AUDIO M-TRACK MK1 USB AUDIO INTERFACE UNIT ONLY

PreSonus AudioBox 22VSL 2-In/2-Out Desktop USB Audio Interface | NOT TESTED