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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Copper DC Tip Plug Connector Cord Cable for Dell HP Laptop Charger Adapter black Pin 7.4 x 5.0 7.4*5.0mm with Led Light 1.8M - Newegg.com
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7.4*5.0 To 4.5*3.0 With Pin Dc Power Charger Adapter Converter Connector For Dell For Hp Blue Tip - Laptop Adapter - AliExpress
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