AC Adapter HP 19V 4.74A 90W for Compaq tc4400, replacement power supply

Replacement AC adapter HP 19V 4.74A 90W for Compaq tc4400 is a compact external power supply designed to provide regulated DC power to Compaq tc4400 notebooks. This HP-branded adapter delivers a nominal output of 19 volts and up to 4.74 amperes, with a rated power of 90 watts, enabling charging of the battery and operation of the laptop from mains power. The unit is intended as a direct replacement or spare for users who need a reliable source of power for the tc4400 model at home, in the office, or while traveling.

Advantages

The adapter provides stable voltage and current output to support consistent notebook performance and battery charging. Its compact form factor and lightweight construction make it convenient to carry as a spare or replacement power supply. Built-in protection features such as short-circuit and overcurrent protection help reduce risk of damage to the notebook and adapter during normal use. The connector is designed to be compatible with the Compaq tc4400 power input to ensure a secure connection.

Suitable for (tasks / use cases)

• Replacing a lost or damaged power adapter for Compaq tc4400 notebooks
• Keeping as a spare adapter for travel or remote work
• Providing stable mains power during extended desktop-style use
• Charging the laptop battery while running power-intensive applications

Key specifications

• Output voltage: 19 V DC
• Maximum output current: 4.74 A
• Rated power: 90 W
• Compatibility: designed for Compaq tc4400 notebook power input
• Connector type: standard DC barrel plug compatible with tc4400
• Input: mains AC (region-dependent voltage and frequency)
• Protections: built-in overcurrent and short-circuit protection

How to use

Connect the adapter to a suitable mains outlet using the supplied or compatible AC cord, then plug the DC connector into the Compaq tc4400 power socket. Verify that the laptop indicates charging or receives power through its charging LEDs or system indicators. When not in use, disconnect the adapter from the mains and from the notebook. Use the adapter in a well-ventilated area and avoid covering it during operation to prevent overheating.

Recommendations

Use the adapter only with compatible Compaq tc4400 notebooks. Ensure the mains voltage and plug type match your local supply before connecting. Replace frayed or damaged cords and avoid using the adapter in wet or excessively dusty environments. For prolonged use, place the adapter on a hard, flat surface to allow airflow and reduce thermal stress.