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Amazon.com: 6 FT Extra Long AC Power Adapter Wall Charger Cord PSU for Casio Keyboard CTK-551 CTK551 : Musical Instruments
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Amazon.com: HQRP AC Adapter/Power Supply Compatible with Casio CTK-541 / CTK541 / CTK-551 / CTK551 Keyboards Replacement [UL Listed] + HQRP Euro Plug Adapter : Musical Instruments
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HQRP AC Adapter & Sustain Pedal for Casio CTK-541, CTK-551, CTK-574, CTK-601, CTK-611, CTK-620L, LK-300TV, LK-90TV Keyboards - Walmart.com
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