Laptop power adapter quer LEC-KOM0913 — 40 W, 19 V, 2.1 A, 0.6 mm barrel

The quer LEC-KOM0913 laptop power adapter is an AC/DC adapter designed to provide a steady 19 V DC output at up to 2.1 A, delivering a maximum power of 40 W via a 0.6 mm barrel connector. It is intended as a replacement or spare power supply for notebooks and portable devices that accept 19 V and the specified current through a small-diameter barrel plug. The adapter converts mains AC to regulated DC and includes basic protection features to support safe charging and continuous operation.

Advantages

This 40 W adapter offers a compact form factor and a single-output design that simplifies installation and connectivity for compatible devices. The regulated 19 V output helps maintain stable device operation under typical loads, while integrated protection measures reduce the risk of damage from short circuits, over-current and over-voltage conditions. The 0.6 mm barrel connector ensures compatibility with devices that require a smaller plug diameter.

Suitable for

• Replacing a damaged or lost laptop power adapter that requires 19 V and up to 2.1 A
• Providing a spare power supply for home or office use
• Powering compatible small notebooks, netbooks or portable electronic devices with a 0.6 mm barrel inlet
• Use in repair shops and service environments for testing and temporary power

Key specifications

• Output voltage: 19 V DC
• Maximum output current: 2.1 A
• Maximum power: 40 W
• Connector type: 0.6 mm barrel plug
• Input: AC mains to DC conversion (universal or country-specific input depends on model)
• Protections: basic protection against short circuit, over-current and over-voltage

How to use

Ensure that the device to be powered accepts 19 V DC and can operate with a current draw up to 2.1 A before connecting the adapter. Connect the adapter to the mains supply using the appropriate mains lead, then insert the 0.6 mm barrel plug firmly into the device’s power jack. Verify that the device begins normal charging or operation and monitor for any unusual heat or behavior on first use. When disconnecting, unplug the mains lead before removing the barrel connector from the device.

Usage recommendations

Use the adapter in a dry, ventilated environment and avoid covering it while in operation to prevent overheating. Match the adapter’s voltage and connector polarity to the target device; if unsure, consult the device documentation or a technician. For continuous high-load operation, allow periodic cooling intervals and inspect cables and connectors for wear to maintain safe performance.