Power Adapter HP 391174-001

The HP 391174-001 power adapter is a compact indoor power supply intended for use with compatible HP laptops. With a black housing and a standard connection lead, this adapter converts AC mains voltage into a stable DC output and is designed to operate across a wide input voltage range of 100–240 V. Delivering 120 W of power, it supports sustained laptop operation and battery charging while fitting standard power sockets and desk setups.

Advantages

The adapter provides consistent power delivery up to 120 W, which helps maintain laptop performance during intensive tasks and accelerates battery charging compared with lower-wattage supplies. Its universal input range (100–240 V) enables use in different regions with compatible mains voltages without requiring a voltage converter. The black finish offers a neutral appearance that integrates with most laptop designs and work environments.

Suitable for

• Powering HP laptops that accept a 120 W external adapter
• Replacing a lost or damaged indoor laptop power supply
• Using at home, in office environments, or other indoor locations with compatible mains voltage

Key specifications

• Power output: 120 W
• Input voltage range: 100–240 V AC
• Product colour: Black
• Intended use: Indoor laptop power supply

How to use

Connect the adapter to a compatible HP laptop power inlet and plug the mains lead into a suitable wall socket that provides voltage within the 100–240 V range. Ensure connectors are fully inserted and secure before powering on the laptop. When disconnecting, remove the mains plug first and then unplug the adapter from the laptop to reduce wear on the connector. Use only with laptops and cables rated for this adapter's power and polarity specifications.

Usage recommendations

Place the adapter on a hard, flat, well-ventilated surface while in use to avoid overheating. Avoid exposing the adapter to liquids, extreme temperatures, or prolonged direct sunlight. Inspect power cables periodically for damage and replace any frayed or cracked leads. For optimal battery health, follow the laptop manufacturer's charging guidance and disconnect the adapter when long-term storage is intended.