Genuine Asus VivoBook K1703 chargers are listed below, please check either underneath your laptop for input or on your old broken Asus VivoBook K1703 ac adapter for output, as this series of laptops and notebooks can be supplied with either the 65w 19v 3.42a charger or the 90w 19v 4.74a, what determines this is normally the power of your processor, so please do check which you need and simply select below.