M-Audio MIDIsport 4x4 USB MIDI Interface 4x4 In/Out Studio Controller TESTED

M-Audio Midiman MIDISPORT 4x4 USB MIDI Interface 4-in/4-out Untested

M-Audio Midiman MIDI Sport 4X4 Anniversary Edition 4-in/4-out MIDI interface

M-Audio Midiman MIDI Sport 4X4 4-in/4-out USB MIDI interface

M-Audio M-Track Solo 2-Channel USB Audio Interface Music, Streaming & Podcasting

Behringer UMC404HD Audiophile 4x4, 24-Bit/192 Khz USB Audio/MIDI Int Broken

M-AUDIO FAST TRACK PRO 4X4 USB AUDIO INTERFACE XLR/TRS W/PHANTOM POWER

Tascam US-4x4 USB Audio/MIDI Interface Includes Adapter; AS-IS