Dynabook Tecra A40-K ac adapters are listed below, simply select your model of Toshiba Dynabook laptop below or you can simply select the Dynabook Tecra A40-K laptop charger 19v 3.42a 65w as so far all notebooks within this series use the same power adapter to successfully charge the battery and power the notebook, all Dynabook chargers include both the charging unit and power cord and if your model supports a link to the USB type C version.