How do nouns top adaptors work? because I can individual find 1 or 2 kind.Does brand event?

I own a compaq presario laptop .Is there vehicle adaptors compatible with mine?

Answer:
I am sure at hand is, just construct sure the plug is the same and have the same polarity and the voltage is correct.
Just capture an adapter that goes vehicle to normal (Grounded) plug. I am running an Acer Travelmate on one and its running fine.
http://www.priorityelectronics.com/lapto...

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