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 for sale - YouTube
CASIO CTK-530 KEYBOARD POWER SUPPLY REPLACEMENT ADAPTER UK 9V | eBay
AC/DC Adapter Charger Power Supply For Casio CTK-533 CTK-530 Keyboard New | eBay