My laptop original power adapter is
Enter 100-240 ~ 2.25A 50-60HZ
Output 19V --- 9.5A
The voltage is 180.5 watts
If I buy a 19V --- 9A adapter is 171 watts will not happen?
There is
Enter 100-240 ~ 2.25A 50-60HZ
Output 12V --- 15A
Voltage is 180 watts and the above that 19V --- 9.5A wattage is the same with the use of the problem?
The current is sometimes small enough to use. But the laptop will report the adapter current is insufficient (HP is the case)
The voltage is low. Is unable to supply power to the books. Like a battery car with a battery without the same TV.
I said that the current is small when the HP 3.5A power supply connected to the books on the 4.75A, the books will prompt the current is too low, affecting the notebook performance. Not referring to your computer.
The voltage is low can not be used. Because it simply can not use.