Jul 09, 2020 · All you need to do is find the voltage and current on your original charger, and cross reference this along with your laptop’s brand to the data sheet. Once you have the correct tip, connect it to the end of the cable and plug in. Technical info. Input: 11V DC – 15V DC Output: 18.5V/ 19V/ 19.5/ 20V DC USB output: 5V 2.1A, 5V 1A USB cables, also known as USB leads, connect electrical devices from keyboards, printers, smartphone and networking boosters. USB is the acronym for Universal Serial Bus. They carry power as well as data and information, allowing USB ported gadgets to recharge batteries in cameras or the transfer of files between a computer and a mobile hard drive.