Replacement For Asus ZenBook UX21A Adapter is rated at 19V 2.37A 45W.The high quality laptop charger for asus zenbook ux21a provides your laptop with safe and reliable power.It is over Charge protection, Voltage protection, Temperature protection, Short circuit protection, enjoys 1-Year Warranty,60-Day Money Back!The Adapter is a 45W rated power supply and replaces asus zenbook ux21a laptop charger. Designed to meet Asus’s original specifications. The Replacement Asus AC Adapter is designed to be 100% manufacturer compatible and will meet OEM specifications.Brand New Replacement For 45W 19V 2.37A Asus ZenBook UX21A AC Adapter/Power Supply/Charger With Laptop Cord.