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Calculation Your Laptop Power Watt and Voltage Before USE
Usually, there will be a specification paper pasted on the back of your laptop that include required input voltage and amps.
Laptop Power Watt = Required Input Voltage x Current Amps (eg, 19v x 3.42a = 65w)
When DC tip and Voltage are the same, higher watt power adapter compatible lower one. But lower watt power adapter is not compatible the higher one. That means you could not use 100w power adapter to power device that required power more than 100w

Ultrathin Design - Portable size for easy carry around
Slim and light, almost just half thickness of general power adapter, easy to carrying.

Multi-Tip Design and Automatic Identification
You can power your different brand laptops with just one adapter. And this power adapter automatically recognizes the best charge input for your device. More convenient and high efficiency. Plug and play, make it easy to power your device.

24-Month Warranty
OAONAN provides 24 Month Warranty for all products, whether it is your first purchase or you are back for more. If you have any issues, please contact our at station letter or our support t