AC adapter Dell 240W 19.5V for laptops — 3-pin connector (MPN 450-AHFY)

The Dell 240W AC adapter (19.5V) is a high‑power external power supply designed for compatible Dell laptops and mobile workstations. It delivers up to 240 watts at 19.5 volts through a 3‑pin output connector to support charging the internal battery and powering systems under heavy CPU/GPU load. The adapter integrates fundamental safety features such as overcurrent and short‑circuit protection and is intended for use with systems that require elevated power delivery compared with standard laptop chargers.

Advantages

This 240W Dell AC adapter provides stable 19.5V output and sufficient wattage to maintain performance when running demanding applications or charging high‑capacity batteries. Built‑in protection helps reduce the risk of damage from electrical faults, while the 3‑pin connector ensures a secure connection to compatible Dell notebooks and workstations. The adapter’s design focuses on continuous power delivery for high‑performance usage scenarios.

Suitable for

• High‑performance Dell laptops and mobile workstations that require up to 240W power
• Charging large capacity laptop batteries while running intensive tasks
• Users who run CPU/GPU‑intensive software such as 3D rendering, simulations, or video editing
• Replacement or spare power adapter for travel and office use

Key specifications

• Output voltage: 19.5 V
• Maximum output power: 240 W
• Connector type: 3‑pin laptop power connector
• Protection features: overcurrent protection, short‑circuit protection
• Use case: external AC adapter for portable computers and mobile workstations

How to use

Connect the adapter to an appropriate AC mains outlet using the included mains cable, then insert the 3‑pin connector firmly into the laptop’s power inlet. Ensure the adapter is positioned on a stable, ventilated surface while in use to avoid overheating. When the battery is fully charged or the system is powered down, disconnect the adapter from the laptop and unplug the mains cable. Use only with compatible Dell systems that support 19.5V, 240W external power.

Recommendations

For reliable operation, avoid covering the adapter and allow airflow around the unit. Inspect cables and connectors regularly for wear, and replace if damaged. Use the adapter with systems and batteries specified by the device manufacturer to ensure correct power delivery and ongoing protection.