AC Adapter Dell Inspiron 15/17 19V 90W (model LA90PM111) compatible replacement

This AC adapter is a compatible replacement for Dell Inspiron 15 and 17 series laptops, providing a 19V output at 90W. It is designed to supply stable power for charging the laptop battery and running the system under typical workloads. The adapter includes the power brick with an integrated cable and connects to the laptop via the appropriate barrel-style connector (verify connector compatibility with your specific Inspiron model before purchase).

Advantages

The adapter delivers a consistent 19V output and up to 90W power to support charging and operation simultaneously. Its compact rectangular power brick and integrated cable simplify setup and reduce the number of separate parts to manage. Built-in protection features help reduce the risk of overheating, short circuits, and overcurrent, while compatibility with common Inspiron models makes it a practical replacement option for users needing a reliable external power source.

Suitable for

• Replacing a lost or damaged AC adapter for Dell Inspiron 15 and 17 series laptops
• Home and office laptop charging and operation
• Travel use where a compact replacement adapter is required
• Temporary or spare power adapter for technicians and IT support

Key specifications

• Output voltage: 19 V
• Output power: 90 W
• Output current: up to 4.74 A
• Connector type: barrel-style DC plug (verify size with your laptop)
• Input: universal AC input suitable for common mains voltages
• Form factor: rectangular external power brick with integrated cable

How to use

Confirm that the adapter's connector matches the power inlet on your Dell Inspiron 15 or 17 laptop and that the voltage rating (19V) and power (90W) are appropriate for your model. Connect the adapter to mains power using the supplied integrated cable, then plug the DC connector into the laptop until it seats securely. Power indicators on the laptop will show charging status; allow the battery to charge fully or operate the laptop while connected to mains as needed. To disconnect, unplug the connector from the laptop first, then remove the adapter from the mains.

Recommendations

Use the adapter on a flat, stable surface with adequate ventilation; avoid covering the power brick during operation to prevent heat buildup. If the laptop supports firmware or BIOS settings related to power management, follow manufacturer guidance to optimize charging behavior. Inspect the connector and cable regularly for wear, and replace the adapter if any damage, unusual noise, or excessive heat is observed.