AC Adapter Dell W125835468 90W with 4.5 mm Barrel Connector

The Dell W125835468 90W AC adapter with a 4.5 mm barrel connector supplies regulated DC power to compatible Dell laptops and notebooks. Designed to convert standard mains AC into the voltage and current required to run the device and charge its battery, this adapter functions as a direct replacement or spare charger for systems that accept a 4.5 mm barrel plug. The compact brick and detachable cable arrangement allow for straightforward connection and convenient storage during travel or daily use.

Advantages

This 90W adapter provides stable power delivery and temperature-controlled operation to support normal laptop performance under typical workloads. The 4.5 mm barrel connector ensures a secure physical and electrical connection with compatible Dell models. Built-in protection features prevent overcurrent, overvoltage and short-circuit conditions, reducing risk to the host device and battery while maintaining consistent output. The adapter’s form factor balances portability and heat dissipation for practical use at home, office, or on the move.

Suitable for

• Replacing a lost or damaged Dell laptop charger that uses a 4.5 mm barrel plug
• Powering Dell portable computers while connected to mains power
• Using as a spare adapter for travel or multi-location setups

Key specifications

• Output power: 90 watts
• Connector type: 4.5 mm barrel plug
• Input: standard mains AC (region-specific voltage and frequency)
• Regulation: DC output with built-in protection against overcurrent, overvoltage and short circuit
• Physical design: external power brick with attached DC cable and separate AC mains cable

How to use

Connect the AC mains cable to the adapter’s inlet and plug the other end into a suitable wall socket. Insert the 4.5 mm barrel connector fully into the laptop’s power jack until seated. Confirm the laptop indicates charging or external power operation. When disconnecting, unplug the barrel connector first, then remove the mains plug. Allow the adapter to cool before storing if it has been in extended use.

Usage recommendations

Use the adapter only with devices specified to accept a 4.5 mm barrel connector and a 90W supply. Ensure the mains voltage matches regional requirements and avoid using damaged cables. For reliable operation, keep ventilation around the power brick unobstructed and store the unit in a dry environment when not in use.