Fonte de alimentação HP 45W 19V modelo 7HB74AV para portáteis e dispositivos compatíveis

The AC power adapter HP 45W 19V model is an external power supply that delivers a regulated 19 V DC output at up to 45 W for compatible HP laptops and devices. Designed for everyday use, the adapter converts mains AC to a stable DC voltage to power systems and charge internal batteries. Its compact form and standard barrel connector support portable workflows, workstation setups, and use as a spare or replacement unit.

Advantages

The adapter provides a consistent 19 V output with a maximum power of 45 W, ensuring steady operation of supported notebooks and peripheral devices. Its compact housing and integrated cable reduce bulk and simplify transport. Built-in protection features such as over-current and short-circuit safeguarding preserve both the adapter and the connected equipment. The adapter’s design is compatible with common HP DC-in specifications, allowing straightforward connection and reliable electrical performance.

Suitable for

• Charging and powering compatible HP laptops and notebooks
• Use as a spare or replacement adapter for travel and remote work
• Powering small external devices that accept 19 V DC input and draw up to 45 W

Key specifications

• Output voltage: 19 V DC
• Maximum output power: 45 W
• Connector type: standard DC barrel connector compatible with supported HP devices
• Input: mains AC input (region-specific mains plug required)
• Form factor: compact external power brick with attached cable
• Protective features: over-current and short-circuit protection

How to use

Connect the adapter to a compatible mains outlet using the appropriate regional power cord, then insert the DC connector into the laptop’s power input jack until it seats securely. Confirm that the laptop indicates charging or external power. When not in use, unplug the adapter from the mains to reduce standby power consumption. Use only with devices that match the specified 19 V and do not exceed the 45 W power rating to avoid insufficient charging or potential thermal stress.

Recommendations

Inspect the connector and cable regularly for damage and avoid exposing the adapter to liquids, extreme temperatures, or prolonged direct sunlight. For reliable performance, use the adapter with devices that specify a 19 V input and similar current requirements, and replace the unit if signs of wear or overheating appear.