UpBright New Global 12V AC/DC Adapter Compatible with Casio WK-1600 WK-1800 WK-1630 WK-3000 WK-3000D WK-3200 WK-3300 WK-3500 WK-8000 AD-12MLAU AD-12 Digital Piano Keyboard 12VDC Power Supply Charger
DC 12v 12 VOLT Power Supply Adapter for Casio WK-1300, WK-1350 Keyboard Piano | eBay