How does a Dell laptop charger with a pin of the same wattage & specs which fits perfectly into an HP not work because it knows it is not an HP charger
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45W/19.5V-2.31A][4.5*3.0] Dell Inspiron Laptop AC Power Adapter Laptop Charger (AU Plug) | i-Station
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ALL LAPTOP REPAIRING SOLUTION: How to fix if DELL Laptop not recognizing adopter which is working on other laptops
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power supply - 3 wires on a (bipolar) DC plug - what are they for? - Electrical Engineering Stack Exchange
Solved: Does the AC adapter for the Dell latitude E6540 have a negative or positive polarity? - Dell Community
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