AC adapter HP 90W 574064-001 for HP laptops, replacement power supply 90 W

The AC adapter HP 90W 574064-001 is a replacement power supply designed for HP laptops that require a 90 W external adapter. It provides stable DC output suitable for charging the laptop battery and powering the device during use at home, in the office, or on the move. The adapter is intended as a direct replacement or spare unit for systems compatible with this power and connector type, offering regulated voltage and built-in protections to support reliable operation.

Advantages

This 90W AC adapter delivers consistent power output to maintain system performance and battery charging. It incorporates overcurrent and short-circuit protection to reduce the risk of damage to the laptop and the adapter itself. The compact design balances portability with adequate cooling, and the fixed cable and connector provide straightforward connection without additional converters. The adapter is compatible with standard mains voltages and includes an insulated housing for safe everyday use.

Suitable for

• Replacing a lost or damaged 90W HP laptop adapter
• Keeping an extra power supply for travel or office use
• Powering and charging HP laptops that accept a 90W external adapter
• Using as a spare unit in multi-device environments or IT service kits

Key specifications

• Output power: 90 watts
• Output type: DC regulated output suitable for HP laptops
• Input voltage: compatible with 100–240 V AC mains
• Connector type: laptop DC barrel or proprietary HP-compatible plug (as used on HP 90W adapters)
• Protections: overcurrent protection, short-circuit protection, overvoltage protection
• Form factor: external brick-style AC adapter with attached DC cable

How to use

Ensure the laptop is powered off or in a low-power state before connecting the adapter. Plug the adapter into a suitable AC mains outlet, then insert the DC connector firmly into the laptop power socket until it seats securely. Verify that the laptop indicates charging or external power. When disconnecting, remove the DC connector from the laptop first, then unplug the adapter from the mains. Allow the adapter to cool before packing it away after extended use.

Recommendations

Use the adapter with compatible HP laptops that require a 90W supply and ensure the connector matches the laptop inlet. Avoid exposing the adapter to moisture, extreme temperatures, or prolonged direct sunlight. Do not place heavy objects on the cable and avoid sharp bends near the connector. If the adapter becomes unusually hot, emits odors, or shows visible damage, discontinue use and replace it to prevent risk to the laptop or user.