Attention poorly shielded

Attention poorly shielded

18.5V 4.9A AC Adapter for HP EliteBook Compaq Pavilion Compaq Presario ProBook compatible with 391173-001 384020-002 463955-001 416421-021 374791-001 374473-001 PA-1650-02HC 384019-002 384021-001 463553-001 ED495AA Laptop Charger 90W power supply, 7.4mm with pin
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Customer Review

This adapter works well and provides proper voltage.
But beware, it is also light compared to a "real" HP adapter is that it is not shielded.
The consequence?
If like me you are using your laptop to power a stereo, you will end up with an unbearable hum in the speakers.
And not a little snoring, but a real big disturbance !!

So, very useful for office, but unusable for multimedia.

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