3 Wire Dell Laptop Charger Wire Diagram ((better))

This is the main power line that carries the positive DC voltage (usually around

The third wire is connected to a small "ID" pin in the center of the barrel connector. This pin uses a (typically via a DS2501 or DS2502 chip) to tell the laptop whether it is a genuine Dell charger and what its power capacity is. 3 Wire Dell Laptop Charger Wire Diagram