Amazon.com: MaxLLTo 9V Power Supply Cord Charger, 6 FT Extra Long Replacement AC Adapter for Casio Keyboard CTK-500, CTK-501, CTK-510, CTK-511, CTK-515, CTK-518, CTK-519, CTK-520, CTK-520L, CTK-530 : Musical Instruments
CTK-501 - Past Models - Standard Keyboards - CASIO
Amazon.com: 9V Power Adapter fit for Casio Keyboard AD-5 AD-5MU WK-110 WK-200 LK-43 LK-100 CT-360 CTK-496 CTK-573 CTK-611 CTK-700 CTK-710 CTK-2100 CasioTone Piano Keyboard Power Supply Cord : Musical Instruments
Casio CTK-501 100 Song Bank Keyboard, 61 Full Size keys, Chord Book, Tested! | eBay
Casio CTK-518 Electronic Keyboard With Power Supply | Pawn Express of Troy