Wire Colors and Functions:
Frayed Shielding: In some cables, the "Ground" (Black) is actually a braided copper mesh surrounding the White and Blue wires. If this mesh touches the White wire, it will short the charger and trigger a safety shutdown. 3 Wire Dell Laptop Charger Wire Diagram
Negative (GND/Ground): Usually the Black wire (or a braided uninsulated shield). This completes the circuit. Wire Colors and Functions: Frayed Shielding: In some
This is the main power line carrying approximately 19.5V to your laptop. Black Wire (Negative / Ground): This completes the electrical circuit. Blue Wire (ID Pin / Control): 3 Wire Dell Laptop Charger Wire Diagram
The Shielded Version (XPS/Precision):