3 Wire Dell Laptop Charger Wire Diagram [verified]

Inside the main cable (the part running from the power brick "block" to the laptop), you will find three distinct wires.

Before diving into the diagram, it’s crucial to understand why Dell uses three wires. Most generic laptop chargers operate on two wires: one center pin (positive) and an outer barrel (negative/ground). Dell, however, introduced a to create a “smart” charger. 3 Wire Dell Laptop Charger Wire Diagram