1. Introduction
Thank you for choosing the UPBRIGHT 12V AC/DC Adapter. This power supply is designed to provide reliable and efficient power to your compatible Gateway GWTN156-11 series laptop. This manual provides important information regarding the safe and proper use of your adapter. Please read it thoroughly before use and retain it for future reference.
Important Compatibility Note: This adapter is specifically designed for 12V Gateway GWTN156-11 series laptops. It is NOT compatible with 19V or 5V versions of laptops. Please verify your laptop's input voltage requirements before connecting the adapter.
2. Safety Information
- Ensure the adapter's voltage and current output match your device's requirements. This adapter is for 12V devices only.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the adapter to strong impacts.
- Do not attempt to open or modify the adapter. Refer all servicing to qualified personnel.
- Keep the adapter away from children.
- Unplug the adapter from the power outlet when not in use for extended periods.
- Ensure proper ventilation around the adapter during use to prevent overheating.
3. Package Contents
Verify that your package contains the following item:
- 1 x UPBRIGHT 12V AC/DC Adapter (Model: FJ-SW1203000U)

Image: The UPBRIGHT 12V AC/DC Adapter, showing its compact design and UL certification label.
4. Setup Instructions
- Verify Laptop Compatibility: Before connecting, confirm that your Gateway GWTN156-11 series laptop requires a 12V DC input. This information is typically found on a label on the bottom of your laptop or near the power input port.
- Connect to Laptop: Insert the barrel connector of the UPBRIGHT adapter firmly into the power input port of your Gateway laptop.
- Connect to Power Outlet: Plug the AC plug of the adapter into a standard 100-240V AC wall outlet.
- Power On: Once connected, your laptop should begin charging or power on if it was off.

Image: Visual guide for checking laptop compatibility, distinguishing between 12V (compatible) and 19V (incompatible) models based on laptop label information.
5. Operating Instructions
The UPBRIGHT 12V AC/DC Adapter functions as a direct power source and battery charger for your compatible Gateway laptop.
- When connected, the adapter will power your laptop and simultaneously charge its internal battery.
- The charging status is typically indicated by an LED light on your laptop, as per your laptop's manufacturer specifications.
- You can use your laptop while it is connected to the adapter and charging.
6. Maintenance
- Cleaning: Disconnect the adapter from both the wall outlet and your laptop 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. Avoid tightly coiling the cable to prevent damage.
- Cable Care: Regularly inspect the power cord for any signs of damage, such as fraying or exposed wires. If damage is found, discontinue use immediately and replace the adapter.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Laptop not charging/powering on. |
|
|
| Adapter feels hot during use. |
|
|
8. Specifications
| Feature | Detail |
|---|---|
| Brand | UPBRIGHT |
| Model Number | FJ-SW1203000U |
| Input Voltage | 100-240V AC, 50/60Hz |
| Output Voltage | 12V DC |
| Output Current | 3.75 Amps |
| Wattage | 45 Watts |
| Connector Type | Barrel Connector |
| Protection Features | OVP (Over Voltage Protection), OCP (Over Current Protection), SCP (Short Circuit Protection) |
| Certifications | UL Listed, CECCCROHS |
| Dimensions (LxWxH) | 4 x 2 x 2 inches |
| Item Weight | 8.1 ounces |
9. Warranty and Support
Your UPBRIGHT 12V AC/DC Adapter comes with a limited warranty.
- Refund Policy: UpBright offers a 30-day refund policy from the date of purchase.
- Exchange Policy: UpBright provides a 24-month exchange policy for defective units.
For warranty claims or technical support, please refer to the contact information provided with your purchase or visit the official UPBRIGHT website.

Image: An UPBRIGHT adapter alongside a representation of a warranty certificate, indicating product assurance.