Brand New 19V Adapter for ASUS Zenbook UX21 UX21E UX31 UX31E Series

How to Select the correct ASUS 19V laptop(adapter) Adapter
Before purchasing ASUS 19V laptop(adapter) you need to make sure make the replacement for 19V Adapters will give you the correct voltage,suitable current output and the right "tips". Most laptop(adapter) users travel, for tdose travel to Australia, Europe or US they require laptop(adapter) adapters that take 100-240 voltage input and output 16 voltage or 19 voltage.
You should Follow 2 easy steps to pick the right laptop(adapter) adapters.
1. Finding the right "output voltage" and "current output"
To find out the voltage & current, turn your laptop(adapter) over and look for a label, sticker or writing which shows the voltage and current.You can also find these shown on your original ASUS AC Adapter 19V if you have it.
voltage [volts V]- it has to be the same as voltage value specified on your laptop(adapter).Different laptop(adapter) were designed to consume power varied by equipments such as CD-Rom, LCD size, CPU maker and CPU speed. You require to use the "matching voltage" . Only use the Replacement For ASUS 19V Charger output the matching voltage of your laptop(adapter). You can easily locate your laptop(adapter) voltage. Mostly, voltage is printed on your laptop(adapter). You also can check your laptop(adapter) manual.
Current output[ampere A] -it has to be the same or higher than the value specified on your laptop(adapter).The Amps may be higher but they cannot by lower. If you are purchasing a universal ASUS 19V laptop(adapter) Adapter or Car Charger you will need to work out the Watts of your original ASUS 19V laptop(adapter) adapter and select the universal ASUS 19V Adapter or Car Charger with the same Watts or next highest Wattage. You can work out the Wattage by multiplying the Voltage by the Amps i.e 16V X 4A = 64 Watts. There is no 64 Watt ASUS 19V AC Adapter so you will need to select the next step up which is the 70 Watt or higher Watt ASUS 19V Power Adapter.(NOTE: If the wattage requirement for your laptop(adapter) is lower than the 64W of the adapter, it will not damage your laptop(adapter), your laptop(adapter) will only take the amount of power it requires. I.E. If your laptop(adapter) needs 50W, then either the 60W or 90W will work OK. If your laptop(adapter) needs 80W then you will need the 90W one as the 75W one will not be powerful enough.)
2. Finding the right "tips"
Different laptop(adapter)s have different connectors. You need the right tip for your laptop(adapter). This is very simply to find. Basically, laptop AC adapters comprise of 2 ends. One end is male power outlet. You use this end to plug into wall power outlet. The other end is called "TIP" which you will plug this tip into the "DC IN" in your laptop(adapter).
Your laptop(adapter) won't work on the wrong tip. You can only use the " matching Tips"
Warning : DO NOT try to force it in.