Products trademarked iTEKIRO are marketed and sold exclusively by EPMUSA at Newegg.com. It is a DC CAR CHARGER, NOT AC ADAPTER. When attached to the 12V car cigarette lighter outlet, this laptop auto adapter ultrabook car charger powers your laptop and charges your laptop battery in your vehicle. Input: DC 12 - 24V; Output: 19VDC 1.75A-2.37A, 45W Max; Dimensions: 3.94" x 1.57" x 1.18"; Weight: 8.7 oz. Please note this car charger is not original, it is a replacement made by iTEKIRO. Your purchase of this adapter comes with 100% satisfaction of 30-day money back guarantee and 1 year replacement warranty, plus a complimentary 10-in-1 USB charging cable for most smart phones, cellular phones, E-Book readers, GPS, MP3 / MP4 players, and digital cameras.