About this item Safety First: This product is certified by UL as its premium quality and safety system have passed UL's rigorous tests. Flawless Compatibility: Fit for Asus Vivobook S15 S510UA S510UN S510UQ S510UF S510UR S510U S510 S510UA-DS51 S510UA-DS71 S510UN-EH76 S510UA-DB71 Laptop. - It will not work properly If your device requires over 65W. Output & Wattage: 19V-3.42A 65W. Size: 3.54 x 3.15 x 1.57 inches.