Power adapter Dell 90W 19.5V 3.34A GW789 for compatible laptops

The Dell 90W 19.5V 3.34A GW789 power adapter delivers regulated DC power for compatible laptops. It is engineered to provide stable charging and continuous operation, supporting typical 90W laptop power requirements. The adapter includes integrated protection circuits that guard against overcurrent, overvoltage and short circuit conditions, and its compact form factor makes it suitable for use at home, in the office or when traveling.

Advantages

This 90W AC adapter provides consistent voltage output and sufficient current for a wide range of notebook models that require 19.5V/3.34A power. Built-in safety features reduce the risk of damage to both the adapter and the connected device. The adapter is compact and lightweight for easy transport and convenient storage. Its design supports both charging the laptop battery and powering the device during extended use.

Suitable for

• Replacing a lost or damaged 90W 19.5V laptop power adapter
• Carrying as a travel spare to maintain productivity on the go
• Providing a dedicated charger for home or office use
• Powering compatible laptops during long runtime sessions

Key specifications

• Output voltage: 19.5 V DC
• Output current: 3.34 A
• Rated power: 90 W
• Input: standard AC mains voltage (region-dependent)
• Safety features: overcurrent protection, overvoltage protection, short-circuit protection
• Connector type: barrel-style laptop DC connector (compatible with supported laptops)
• Form factor: compact, portable external power brick with attached cable

How to use

Connect the adapter to an appropriate AC mains outlet using the supplied or region-appropriate mains lead. Attach the DC connector firmly to the laptop power port ensuring correct polarity and a secure fit. Power indicators on the laptop or adapter (if present) will indicate charging status. Disconnect the adapter by first unplugging it from the laptop, then from the mains outlet. Allow the adapter to cool between prolonged uses and avoid covering it while in operation to maintain ventilation.

Recommendations

Use the adapter with laptops specified for 19.5V input and similar current ratings to ensure compatibility. Avoid exposing the adapter to moisture, extreme temperatures, or physical impact. For optimal battery health, follow the laptop manufacturer's guidelines for charging cycles and unplug the adapter when not required for continuous operation. Replace the adapter if the cable insulation is damaged or if any abnormal noise, heat or odor occurs during use.