HQRP AC Adapter / Power Supply compatible with Casio CTK-530 / CTK530 / CTK-531 / CTK531 Keyboards Replacement plus HQRP Euro Plug Adapter - Walmart.com
CASIO CTK-530 TOUCH Sensitive Electronic Keyboard - Piano, W / Power Supp., VGUC $75.00 - PicClick
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