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Amazon.com: MyVolts 9V Power Supply Adaptor Compatible with/Replacement for Casio CTK-450 Keyboard - US Plug : Musical Instruments
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Amazon.com: MaxLLTo 9V AC Adapter for Casio Keyboard CTK-450, CTK-451, CTK-470, CTK-471, CTK-480, CTK-481, CTK-485, CTK-491, CTK-495, CTK-496 Power Supply Cord Charger, 6 FT Long : Musical Instruments
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