Power adapter Dell 90W 19.5V 3.34A (MPN 4T4GM) for Dell laptops

The Dell 90W 19.5V 3.34A power adapter provides stable AC-to-DC power delivery for compatible Dell laptops. Designed to replace or complement original chargers, this adapter supplies a consistent 19.5-volt output at up to 3.34 amps to charge the battery and power the laptop during use. The unit includes a standard barrel-style DC connector and integrated protection against over-current and short circuits, making it suitable for regular use at home, in the office, or on the road.

Advantages

This adapter offers steady voltage regulation to maintain laptop performance while charging and in use, reducing the risk of unexpected shutdowns. Compact design and a durable cable make it convenient to carry and resistant to everyday wear. Built-in safety features protect both the adapter and the connected device from common electrical faults, and the 90W power rating supports systems that require higher power than typical low-wattage chargers.

Suitable for

• Charging and powering compatible Dell laptops at home
• Office workstation use where continuous power is required
• Travel and business trips as a spare or replacement charger
• Use with docking setups that accept external laptop power supplies

Key specifications

• Output voltage: 19.5 V DC
• Maximum output current: 3.34 A
• Maximum output power: 90 W
• Connector type: standard barrel-style DC connector compatible with supported Dell laptop inlets
• Protection: over-current and short-circuit safeguards
• Suitable operating conditions: typical indoor environments for home, office, and travel use

How to use

Connect the adapter to an appropriate AC mains outlet using the supplied AC power cord, then insert the DC connector into the laptop's power input until it seats securely. Ensure the laptop model supports a 19.5V, 3.34A input before use. While charging, monitor the laptop indicator lights or operating system battery icon to confirm charging status. Disconnect the adapter by first removing the DC plug from the laptop and then unplugging the AC cord from the mains when not needed.

Recommendations

Use the adapter in well-ventilated, dry environments and avoid placing heavy objects on the cable. Do not use the adapter with devices that require different voltage or current ratings. If the adapter becomes hot to the touch, emits unusual smells, or shows visible damage, discontinue use and replace it. For optimal battery health, avoid leaving the adapter connected continuously for extended periods once the battery is fully charged.