Casio CTK-471 Midi Elecronic Keyboard Controller POWER SUPPLY FULLY TESTED

Alesis Melody 61 61-Key Keyboard Black w/ Microphone & Power Adapter

Alesis Qmini - Portable 32 Key USB MIDI Keyboard Controller with Velocity

Alesis V49 49-Key USB MIDI Keyboard Controller

Alesis Melody 32 Key Portable Keyboard With Built In Speakers

Casio CT-S190 Electronic Keyboard, 61 Keys, Black, with Power

Alesis Vmini Portable 25-Key USB-MIDI Keyboard Controller

Casio CTK-2550 Keyboard with A/C power supply