Asus X77VN Adapter, brand new replacement that is made from A grade quality parts, is tested throughout the manufacturing process to match the original laptop adapter's performance. For it is made under the international standards and certification(CE, UL Listed, ISO9001/9002), we ensure that our replacemnt power adapter will be quite compatible with original equipment and specifications. With 12 months warranty for manufacturer's defects and 30-days money-back guarantee on all the products.
2.Over temperature protection.
3.Global Universal, different countries with different specifications of AC power cord.
4.100% HI-POT testd.
5.100% cycling BURN-IN.
6.LED power-on indicator.
The voltage output from the Asus X77VN Ac Adapter provides DC to power your laptop. If the voltage does not match the input current requirement of your laptop and battery, your laptop will not function properly. Both high and low voltage will affect the performance of your laptop. and effect your laptop battery life.
A power tip will normally have an inner and an outer conductor. The inner conductor may have positive or negative polarity. Based on the polarity you will need to carefully select a adapter. If the positive and negative polarity is connected in the wrong way it will cause severe damage to your laptop. Most of the adapter have standardized polarity symbols labeled on them, which helps you to buy the right Asus X77VN power supply.