Amazon.com: Universal 9.84 Ft 12V Yamaha Keyboard Power Cord,UL Listed,AC Adapter for Yamaha PSR, YPG, YPT, DGX, DD, EZ and P Digital Piano and Portable Keyboard Series,Replacement for Yamaha PA130 PA150 Adapter :
PSR-S550 Demonstration Movie - YouTube
Amazon.com: Universal 9.84 Ft 12V Yamaha Keyboard Power Cord,UL Listed,AC Adapter for Yamaha PSR, YPG, YPT, DGX, DD, EZ and P Digital Piano and Portable Keyboard Series,Replacement for Yamaha PA130 PA150 Adapter :
Amazon.com: AC Adapter Works with Compatible with Yamaha PSR S550 S550B S700 S710 S900 S910 Keyboard Power Supply : Musical Instruments
Amazon.com: Accessory USA Global 16V AC/DC Adapter for Yamaha P-120 P120 PSR s550 s550b s700 s710 s900 s910 Piano Keyboard AW16G Workstation Yamaha PSR-2100 OR700 S900 Power Supply Cord Cable Charger Mains
Amazon.com: AC Adapter Power Suppy Compatible with Yamaha PSR-S500 PSR-S550 Digital Piano Keyboard PSRS550 PSRS500 : Musical Instruments