Output:
19.5V 2.31A, which translates to 45W. Some models may be 65W while maintaining the same voltage.
Connector:
The "blue mouth" or "blue tip" refers to the 4.5mm x 3.0mm connector with a pin in the center, a common design for HP chargers.
Compatibility:
It is compatible with a wide range of HP notebooks, including models from the Pavilion, EliteBook, Envy, Spectre, ProBook, and Stream series.