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Dc Power Cord / Cable Charger Laptop Adapter 7.4*5.0mm Female To 4.5*3.0mm Central Pin Male Plug Connector For Dell Laptop - Connectors - AliExpress
![power supply - 3 wires on a (bipolar) DC plug - what are they for? - Electrical Engineering Stack Exchange power supply - 3 wires on a (bipolar) DC plug - what are they for? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/Uaob5.jpg)
power supply - 3 wires on a (bipolar) DC plug - what are they for? - Electrical Engineering Stack Exchange
![Amazon.com: UpBright 4-Pin 5V AC/DC Adapter Compatible with Dell SuperSpeed D3000 WMGHV J22N2 0J22N2 452-11648 452-11646 R47M9 Targus ACP075us ACP70USZ ACP70US Y5T3Y 0Y5T3Y YWDN0 469-4034 332-0446 Power Supply : Electronics Amazon.com: UpBright 4-Pin 5V AC/DC Adapter Compatible with Dell SuperSpeed D3000 WMGHV J22N2 0J22N2 452-11648 452-11646 R47M9 Targus ACP075us ACP70USZ ACP70US Y5T3Y 0Y5T3Y YWDN0 469-4034 332-0446 Power Supply : Electronics](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61kHONJIhgL.jpg)
Amazon.com: UpBright 4-Pin 5V AC/DC Adapter Compatible with Dell SuperSpeed D3000 WMGHV J22N2 0J22N2 452-11648 452-11646 R47M9 Targus ACP075us ACP70USZ ACP70US Y5T3Y 0Y5T3Y YWDN0 469-4034 332-0446 Power Supply : Electronics
![laptop - Hacking Dell charger to run directly from an external 19.5V power source - Electrical Engineering Stack Exchange laptop - Hacking Dell charger to run directly from an external 19.5V power source - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/IIC6A.png)
laptop - Hacking Dell charger to run directly from an external 19.5V power source - Electrical Engineering Stack Exchange
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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7.4x5.0 with pin inside DC Power Charger Plug Cable Connector for Dell Laptop adapter charger DC connector 7.4*5.0mm cable|charger for laptop| charger for dell laptopadapter for laptop - AliExpress
![Dell laptop compatible Charger Techie Brand 130W 19.5V 6.7A Pin size 7.4mm x 5.0mm x 0.6mm | Laptop Charger | Laptop Battery Dell laptop compatible Charger Techie Brand 130W 19.5V 6.7A Pin size 7.4mm x 5.0mm x 0.6mm | Laptop Charger | Laptop Battery](https://i0.wp.com/www.sastelaptops.com/wp-content/uploads/2023/01/Techie-130W-19.5V-6.7A-Pin-size-7.4mm-x-5.0mm-x-0.6mm-compatible-Dell-laptop-Charger.png?fit=1135%2C844&ssl=1)