Power adapter Dell 90W 19.5V 3.34A for Dell laptops (MPN 450-16391)

Dell 90W AC adapter delivers stable 19.5V output at up to 3.34A to power compatible Dell laptops and charge their batteries. This compact external power supply is designed as a direct replacement for original Dell chargers with matching voltage and connector type. It is intended for everyday laptop operation, travel and office use when the original adapter is unavailable or faulty.

Advantages

The adapter provides a consistent 19.5V output and up to 3.34A current to maintain laptop performance and battery charging without interruption. Its compact form factor makes it easy to carry in laptop bags and reduces desk clutter. The unit includes standard connector compatibility for supported Dell models and applies built-in protection against common electrical issues to help safeguard the laptop.

Suitable for

• Replacing a lost or damaged Dell laptop charger
• Keeping as a spare adapter for travel or commuting
• Using in office or home environments for everyday laptop use
• Charging battery and providing power during extended work sessions

Key specifications

• Output voltage: 19.5 V
• Maximum output current: 3.34 A
• Rated power: 90 W
• Input: standard AC mains compatibility (universal voltage range for typical regions)
• Physical form: compact external brick-style adapter
• Connector: standard barrel/plug compatible with supported Dell laptop models
• Protection features: over-current, over-voltage and short-circuit protection (built-in)

How to use

Connect the adapter to an AC mains outlet using the supplied mains lead, then insert the adapter plug into the laptop DC input jack until it seats securely. Verify the laptop indicates charging or external power is recognized. When not in use, disconnect the adapter from the laptop and unplug from the mains. Allow the adapter to cool if it has been used for extended periods before storing.

Recommendations

Use the adapter with compatible Dell laptops only and confirm the laptop’s required voltage and connector type match the adapter specifications. Avoid exposing the adapter to moisture, extreme temperatures, or heavy mechanical stress, and ensure adequate ventilation while in use to maintain reliable operation and prolong service life.