M-Audio Keystation 49 MK3 49-Key USB-Powered Midi Keyboard Controller

M-Audio Keystation 49 MK3 49-Key MIDI Keyboard Controller Pitch Mod USB Out

M-Audio Keystation 49-ES USB MIDI Controller Keyboard Black UNTESTED

M-Audio Oxygen Pro 49-Key Keyboard Controller

M-Audio Keystation 49 MK3 USB Midi Keyboard Controller

M-Audio Axiom 49 Key Advanced Semi-Weighted USB MIDI Controller.

M-Audio Keystation 49 MK3 49-key Keyboard Controller

M-Audio Keystation 49 MK3 USB MIDI Controller (Mostly Working; FOR PARTS/REPAIR)