AC/ DC Laptop Adapter input mode option, can used in wide range( such as indoor, automobile, airplane, and boat) . The USB output interface( 5W max) can charge for the digital products. With LCD can show the output voltage and more working informations accurately Input: 100-240V-50/ 60Hz 1.8A Output: DC 15V--6.0A 16V-5.6A 18.5V-4.8A 19V-4.7A 19.5V-4.6A 20V-4.5A 24V-3.75A USB 5V--1A 5W MAX