1. Product Overview
This usmart 12V 5A AC/DC adapter charger is designed as a compatible replacement power supply for a wide range of LCD monitors, including specific models from Norcent, Toshiba, HP, and Compaq. It provides stable and reliable power for your devices, featuring a barrel tip connector.
The adapter is built with safety features to protect against over-voltage, short circuits, and over-current conditions, ensuring safe operation for your electronics.
2. Safety Information
WARNING: To reduce the risk of fire or electric shock, carefully follow these instructions.
- Ensure the adapter's voltage and current ratings match your device's requirements before connecting.
- Do not expose the adapter to rain or moisture.
- Avoid using the adapter in extremely hot or cold environments.
- Do not disassemble or modify the adapter. Refer all servicing to qualified service personnel.
- Keep the adapter away from children.
- Unplug the adapter from the power outlet when not in use for extended periods.
- This unit features built-in safety protections against over-voltage, short circuits, and over-current.
3. Package Contents
- 1 x usmart 12V 5A AC/DC Adapter Charger
- 1 x Power Cord Cable

Image: The usmart 12V 5A AC/DC Adapter Charger shown with its accompanying power cord.
4. Setup Instructions
- Verify Compatibility: Before connecting, ensure your device (LCD monitor) requires a 12V 5A power supply and has a compatible barrel tip input.
- Connect to Device: Insert the barrel tip connector of the adapter firmly into the power input port of your LCD monitor.
- Connect Power Cord: Plug the included power cord into the adapter's input port.
- Plug into Outlet: Insert the other end of the power cord into a standard wall outlet (100-240VAC, 50-60Hz).
- Power On: Once connected, your device should receive power. Turn on your monitor as usual.

Image: The adapter and power cord laid out, illustrating the components for connection.
5. Operation
The usmart 12V 5A AC/DC adapter operates automatically once connected to a power source and a compatible device. It converts the AC wall voltage to the required DC voltage for your monitor.
- The adapter is designed for continuous operation within its specified voltage and current limits.
- Its portable design makes it convenient for use in various locations.
- The adapter supports worldwide input voltage (100-240VAC), making it suitable for international travel with appropriate plug adapters (not included).

Image: A side view of the adapter, highlighting the barrel tip connector.
6. Maintenance and Care
- Cleaning: Disconnect the adapter from power before cleaning. Use a soft, dry cloth to wipe the surface. Do not use liquid cleaners or aerosols.
- Storage: When not in use, store the adapter in a cool, dry place, away from direct sunlight and extreme temperatures.
- Cable Management: Avoid sharp bends or kinks in the power cord and adapter cable to prevent damage.
- Inspection: Periodically inspect the adapter and cables for any signs of damage, such as frayed wires or cracked casing. Discontinue use if damage is found.

Image: A close-up view of the barrel tip connector, emphasizing its design.
7. Troubleshooting
- No Power to Device:
- Ensure the adapter is securely plugged into both the wall outlet and your device.
- Check if the wall outlet is functional by plugging in another device.
- Verify that the adapter's specifications (voltage, current, connector type) match your device's requirements.
- Adapter Feels Hot:
- It is normal for adapters to feel warm during operation. However, if it is excessively hot to the touch or emitting a burning smell, unplug it immediately and discontinue use.
- Ensure adequate ventilation around the adapter; do not cover it.
- Intermittent Power:
- Check for loose connections at both the wall outlet and the device.
- Inspect the cables for any visible damage.
8. Technical Specifications
| Feature | Specification |
|---|---|
| Brand | usmart |
| Model Number | KT60W190342B3 |
| Input Voltage | 100-240VAC, 50-60Hz |
| Output Voltage | 12V DC |
| Output Current | 5A |
| Wattage | 60 watts |
| Connector Type | Barrel Tip (NOT Pin connector) |
| Color | Black |
| Item Weight | 11 ounces |
| Product Dimensions (LxWxH) | 5 x 2 x 1 inches |
| Special Feature | Over Voltage Protection, Short Circuit Protection, Over Current Protection |
9. Warranty and Support
For information regarding warranty coverage or technical support, please refer to the product packaging or contact usmart customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.





