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Amazon.com: Wall Home AC Power Adapter Cable Cord for Casio CTK 541 CTK-541 Digital Electronic Keyboard : 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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