Power adapter Dell 90W 19.5V 3.34A for laptops — AC adapter, model 492-11381

The Dell 90W 19.5V 3.34A AC adapter provides stable DC power conversion for compatible Dell laptops and portable devices that require up to 90 watts. The compact adapter converts mains AC to 19.5V DC at a nominal 3.34A output and is designed for use as a replacement or spare power source at home, in the office, or while travelling. The unit supports battery charging and continuous operation of laptops without relying on internal battery power.

Advantages

The adapter delivers a consistent 19.5V output with automatic regulation to maintain stable voltage under typical load conditions. Its rated 90W power capacity supports charging and operating systems that require higher power draw than smaller adapters can provide. The compact form factor and integrated cable make it convenient to carry and position, while built-in safety features such as overload and short-circuit protection help protect both the adapter and the connected device.

Suitable for

• Replacing a lost or damaged Dell laptop power adapter
• Keeping as a spare adapter for travel or remote work
• Powering and charging compatible Dell notebooks during extended use
• Using at office workstations or home setups where a reliable mains adapter is needed

Key specifications

• Output voltage: 19.5 V DC
• Output current: 3.34 A
• Maximum power: 90 W
• Input: AC mains (standard range for consumer adapters)
• Typical connector type: laptop DC barrel or manufacturer-specific tip compatible with supported Dell models

How to use

Connect the adapter to a suitable AC mains outlet using the supplied power cord, then plug the DC connector into the laptop power port until it seats securely. Ensure the laptop is switched off or in a safe state when first connecting if possible. When charging, monitor the laptop’s charging indicator to confirm power transfer. Disconnect the adapter by first unplugging from the laptop and then removing the power cord from the mains outlet.

Recommendations

Use the adapter with compatible Dell laptops that accept 19.5V/3.34A input and observe ambient temperature limits; avoid exposure to liquids and extreme heat, and ensure ventilation around the adapter during extended use. If the adapter becomes unusually hot, emits odors, or functions intermittently, discontinue use and replace it.