This power adapter charger is specifically designed for Yamaha keyboards, including PSR-S550, S650, S750, S710, S670, S770, and S970 models. It is a reliable and efficient way to charge your keyboard battery, ensuring long-lasting performance. The charger is designed for use with Yamaha keyboards and meets all necessary specifications for optimal charging. It is easy to use and comes with all the necessary cables and connections. With this power adapter charger, you can quickly and easily charge your Yamaha keyboard battery, keeping your music-making experience uninterrupted.