AC adapter Dell 240W 7.4mm XXRDP — power supply for Dell laptops

Replacement AC adapter Dell 240W 7.4mm XXRDP provides mains power and charges batteries for compatible Dell laptops. With a rated output of 240W and a 7.4 mm barrel connector, the adapter is designed for higher‑performance laptop models that require increased power delivery. It serves as an original‑equivalent power supply for use at home, in the office, or while traveling to maintain stable operation and reliable charging.

Advantages

The adapter delivers a stable 240W output with built‑in safety protections to prevent overcurrent, overvoltage, and short circuits. The 7.4 mm barrel connector ensures a secure physical fit to Dell laptops that use this connector type. Its compact rectangular housing and cable lengths are optimized for convenient placement and portability, providing consistent power under sustained loads. The design complies with common efficiency and safety expectations for laptop power supplies.

Suitable for

• High‑performance Dell laptops requiring 240W power delivery and a 7.4 mm barrel connector
• Replacing a damaged or lost original AC adapter
• Using as a spare adapter for office or travel
• Powering laptops during extended work sessions or heavy CPU/GPU usage

Key specifications

• Output power: 240 watts
• Connector type: 7.4 mm barrel plug
• Input: standard AC mains voltage (auto‑switching where applicable)
• Protection features: overcurrent, overvoltage, short‑circuit protection
• Housing: compact rectangular adapter with attached power cable

How to use

Connect the adapter to an appropriate AC mains outlet using the supplied mains cable, then insert the 7.4 mm barrel connector firmly into the laptop’s power input jack until it seats securely. Verify that the laptop indicates external power and that charging commences if a battery is present. For safe operation, use the adapter on a stable, flat surface with adequate ventilation and avoid covering the adapter during use. Disconnect from mains before cleaning or storing the adapter.

Recommendations

Use the adapter with devices that match the connector type and power requirements. Avoid using the adapter with power adapters or splitters that alter voltage or current. If the laptop does not power on after connection, inspect the connector and power outlet, and test with an alternative compatible adapter or service support. Store the adapter in a dry environment and avoid exposure to extreme temperatures or moisture.