Can the power adapter for HP4421s and HP6515b be general?
The parameters of the input and output interface, notebook adapter is universal adapter mainly depends on the consistency that you see recommended parameters of the power adapter to see if it is consistent, consistent with this adapter two machines can be generic.
The low voltage plug of the power supply should be the same, the voltage should be the same, the current is greater than or equal to the use
If the socket of the power adapter is the same as the output voltage, it can be common.But there are some places to watch, HP notebook power adapter output voltage there are many, the most common are 19V and 18.5V, but even the same output voltage, the output current is not the same as possible, which is the output power is not the same, if the input power of his notebook to big, you have to use line can, low power battery may not make normal use, or even harmful to the battery.
