Noisy Power Adapters Are Not Allowed

         The original power supply is definitely better, but the actual use may not feel the difference. Usually our equipment has a safe range of voltage input, such as a 2.5 mobile hard disk, which requires 5V plus or minus 5%, too high or too low, the protection circuit will stop the device. If the protection circuit is activated, it means that before this, your machine has approached or exceeded the upper or lower limit of its design, which has an impact on the life of the machine...

Of course, the non-original power supply mentioned here is still the original factory power supply.

The more important problem for notebooks may be the data security of the notebook, and the sudden automatic protection and stop working is a terrible thing for the computer, especially many friends who do not use the battery. Sometimes the computer's inexplicable restart is also related to this.

For the original power supply, the manufacturer is very clear about how much load capacity the power supply needs. The calculated safe nominal voltage and current are definitely more accurate. However, if you are using a non-original adapter, such as a general-purpose transformer, the above problems cannot be seriously considered. This is because users can only try to get compatibility from the power parameters, but the internal resistance of each adapter is different. The allowable error of the nominal voltage may be different. The range of the voltage at the nominal current output may also vary. If you have not carefully measured the relevant values, it is definitely risky. The kind of inferior quality power supply is definitely not insurance.