There are several items on the label of the power adapter that need attention. First, it's the adapter model, for example, the model of the adapter is PA-1650-66, it tells us a few information, that is, its manufacturer, wattage, etc. The beginning of PA is generally produced by LITEON, 1650 means that the adapter is 65W , 1750 is 75W, 90CD/SB is 90W; the second is the INPUT of the adapter, which is generally 100-240V~50-60Hz in China, which means that this adapter can be used in 100V-240V The voltage below works normally; the third is the adapter's OUTPUT (output), two numbers can quickly calculate the wattage of this adapter, for example, this adapter, 19*3.42=64.98, indicating that this is a 65W adapter.
The power adapter of most notebook computers can be suitable for 100～240V alternating current (50/60Hz).
