Power adapter Dell 240W 19.5V 3.34A for compatible Dell laptops (MPN 450-AAJI)

The Dell 240W AC power adapter provides a stable 19.5V output and delivers up to 240 watts to compatible Dell laptops. Designed as a replacement or spare unit for travel and office use, this adapter features a standard DC plug and integrated safety protections against overcurrent, overvoltage and short circuits. The adapter is suitable for high-performance systems that require consistent power delivery for charging the battery and running demanding applications.

Advantages

This power adapter offers reliable voltage regulation and sufficient wattage for power-hungry laptops, helping maintain system performance under load. Built-in protection circuits reduce the risk of damage to the laptop from electrical faults, and the compact design makes it convenient to carry as a spare for commuting or business trips. The adapter is compatible with a range of Dell notebook models that accept a 19.5V input and the standard DC connector.

Suitable for

• Replacing a damaged or lost original Dell adapter
• Keeping as a spare at the office or in a travel bag
• Powering and charging high-performance Dell laptops
• Use with stationary work setups that require stable, continuous power

Key specifications

• Output voltage: 19.5 V DC
• Maximum power: 240 W
• Maximum current: 3.34 A (per product summary specification)
• Connector type: standard Dell-compatible DC plug
• Protection features: overcurrent, overvoltage and short-circuit protection
• Form factor: external AC adapter with AC input cord and DC output cable

How to use

Connect the adapter to an AC mains outlet using the supplied AC input cord, then plug the DC connector into the laptop power jack until it seats securely. Verify that the laptop indicates charging and that any battery/charging LED or system indicator shows normal operation. When not in use, disconnect the adapter from the laptop and mains power. Allow the adapter to cool if it becomes warm during extended use and avoid covering the unit while it is operating.

Recommendations

Use this adapter only with laptops that accept a 19.5V DC input and the compatible DC connector. Avoid exposing the adapter to moisture, extreme temperatures or mechanical stress. For consistent performance, use a properly grounded AC outlet and replace the adapter if you notice unusual noise, smell or visible damage to the cable or housing.