Power adapter Dell 240W 19.5V 3‑pin for compatible Dell laptops (MPN 450‑AATG)

The Dell 240W AC adapter supplies 19.5V DC power through a 3‑pin plug to compatible Dell laptops. Designed for higher‑performance notebooks and mobile workstations, this adapter delivers up to 240 watts to maintain charging and stable operation during sustained heavy workloads. It is intended as a replacement or spare power unit to ensure reliable power delivery and integrated protection against common electrical faults.

Advantages

This 240W Dell adapter provides a high continuous output for power‑hungry systems, reducing the risk of power throttling under load. The 3‑pin connection supports stable contact and heat dissipation while the adapter includes standard protection features against overcurrent, overvoltage and short circuits. The design is compatible with a range of Dell portable workstations and high‑performance laptops that require a 19.5V supply and elevated wattage.

Suitable for

• High‑performance Dell laptops and mobile workstations that require a 19.5V, high‑wattage power source
• Users who need a replacement or spare AC adapter for travel or office use
• Scenarios involving sustained heavy CPU/GPU workloads where consistent power delivery is critical

Key specifications

• Output voltage: 19.5 V DC
• Maximum output power: 240 W
• Connector type: 3‑pin AC input and matching DC plug for compatible Dell laptops
• Protection: built‑in safeguards against overcurrent, overvoltage and short circuits
• Form factor: external brick style AC adapter with attached DC cable

How to use

Connect the adapter to an AC mains outlet using the 3‑pin input cable, then insert the DC plug into the laptop’s power socket until it seats securely. Verify that the laptop indicates charging or external power. Use the adapter on a flat, ventilated surface and avoid covering the adapter while in use to maintain cooling. Disconnect the adapter from the mains and the laptop before moving the system or performing maintenance.

Recommendations

Use this adapter as a direct replacement for compatible Dell models that specify a 19.5V, 240W power supply. Confirm the laptop’s input voltage and connector compatibility before use. For optimum safety and longevity, operate the adapter within normal ambient temperatures, avoid exposing it to moisture, and periodically inspect cables and connectors for wear or damage.