* ASUS ZenBook S UX391 Travel Charger. * This battery charger charges ASUS ZenBook S UX391. * Advanced CMOS microcontroller chip manages the charging process for safe, rapid and reliable battery charging. * Include a free British standard type G power plug and socket convertor adapter for customers in the United Kingdom region. * Power off automatically when ASUS ZenBook S UX391 battery is fully charged.