Power adapter Dell 45W 19.5V 3.34A (model JNM5N) for laptops

The Dell 45W AC adapter delivers 19.5V at 3.34A to compatible laptops, providing a compact external power supply designed for everyday use, travel, and office environments. The adapter supplies a stable DC output through a standard barrel connector used on supported Dell laptop models and integrates basic protection features to reduce risk from overcurrent and short circuits.

Advantages

This adapter combines a small form factor with consistent power delivery suitable for sustained laptop operation and battery charging. Built-in safety features help protect both the adapter and the connected device by limiting current spikes and responding to fault conditions. Its universal AC input range supports use in different regions when paired with the appropriate mains lead, and the moderate 45W output balances efficiency and compatibility for a range of mainstream Dell notebooks.

Suitable for

• Replacing a damaged or lost 45W Dell laptop adapter
• Carrying as a travel or office spare power supply
• Powering compatible Dell laptops for everyday productivity tasks
• Using where a compact, lower-wattage adapter is sufficient

Key specifications

• Output voltage: 19.5 V DC
• Output current: 3.34 A
• Rated output power: 45 W
• Connector type: standard cylindrical barrel connector for supported Dell laptops
• Input: universal AC input range for mains connection (requires appropriate mains lead)
• Protection features: overcurrent protection and short-circuit protection
• Form factor: compact external brick-style adapter

How to use

Connect the adapter to mains power using a compatible mains lead, then plug the barrel connector into the laptop power input until it seats securely. Ensure the laptop is switched off or in a suitable power state before initial connection if recommended by the laptop manufacturer. The adapter will provide charging and power delivery when the laptop is powered on; monitor for any unusual heat or warning indicators and disconnect if abnormal conditions are observed. For storage, keep the adapter in a dry location and avoid wrapping the cable tightly around the brick to prevent strain on the cable and connector.

Recommendations

Use the adapter with Dell laptop models specified by the manufacturer for 19.5V/3.34A input. Always use a mains lead rated for your region and inspect cables regularly for damage. Avoid exposing the adapter to liquids or extreme temperatures and allow adequate ventilation during use to maintain safe operating temperature.