Cavo Alimentazione Portatile DC 7.4x5.0mm Femmina a 3Pin Spina Adattatore Convertitore per Razer
The power of your female laptop adapter should be not lower than the laptop for Razer's input. This is very important. For example, the input of your laptop for Razer is 19.5V 11.8A 230W, then your female adapter should be not lower than 230W.