M-Audio KeyStudio 49i - Keyboard-based Music 9900-52237-10 B&H
M-Audio KeyStudio 49 Key USB MIDI Keyboard Controller Tested Working | eBay
Amazon.com: M-Audio Keystation 49 MK3 - Semi Weighted 49 Key USB MIDI Keyboard Controller with Assignable Controls, Pitch and Mod Wheels, and Software Included : Everything Else
M-Audio KeyStudio 49 Key USB MIDI Keyboard Controller Tested Working | eBay