Yamaha PSR-130 Keyboard has a couple of nice tricks - YouTube
Amazon.com: Yamaha PSRE373 61-Key Touch Sensitive Portable Keyboard with PA130 Power Adapter : Musical Instruments
Amazon.com: AC Power Adaptor for Yamaha Keyboard PA130 PA150: UL Listed Extra Long Cord PA-3 PA-3B PA-3C PA-40 PA-5 PA-5C PA-5D PA-6 PA-1 PA-1B PA-4 PA-130 PA-150 PA-150A EP-A3 KP-A3 PA 130
Yamaha PSR-EW310 76-key Portable Arranger with PA 130 Power Adapter | Sweetwater
Yamaha Keyboard PSR 130, Hobbies & Toys, Music & Media, Musical Instruments on Carousell