1. Introduction
The Monster Power Shield XL is a versatile surge protector and outlet extender designed to safely power and charge multiple devices. It features 4 AC grounded outlets and 2 USB-A ports, providing a comprehensive power solution for your home or office. With 540 Joules of surge protection, it safeguards your valuable electronics from power fluctuations. Its unique magnetic mounting option and a durable 6-foot braided extension cord offer flexible placement and enhanced convenience.

Image: The Monster Power Shield XL, highlighting its magnetic mounting capability and compact design for wall outlets.
2. Important Safety Information
- Do not exceed the electrical ratings of the surge protector.
- Do not use in wet environments or near water.
- Do not connect to another relocatable power tap.
- Ensure the surge protector is properly grounded. The "Protected" LED indicator should be illuminated green to confirm active surge protection.
- Keep out of reach of children.
- Do not disassemble or modify the device.
3. Setup Guide
- Unpack the Device: Carefully remove the Power Shield XL from its packaging.
- Connect to Power: Plug the surge protector's 6-foot braided extension cord into a standard grounded AC wall outlet.
- Verify Protection: Once plugged in, check the LED indicators on the top surface. The "Protected" light should illuminate green, indicating that the surge protection is active. If it is not lit, the unit is not providing surge protection and should be replaced.
- Optional Magnetic Mounting:
- Locate the included magnetic plate with 3M adhesive.
- Peel off the protective backing from the 3M adhesive.
- Attach the adhesive side of the magnetic plate to a clean, flat surface where you wish to mount the surge protector (e.g., under a desk, on a wall). Press firmly for 30 seconds.
- Align the magnetic base of the Power Shield XL with the mounted plate. The strong magnet will secure the unit in place.

Image: A hand demonstrating the magnetic mounting feature of the Power Shield XL, showing the adhesive plate.
4. Operating Instructions
The Monster Power Shield XL is designed for simple plug-and-play operation.
- AC Outlets: Plug your electronic devices (e.g., laptops, monitors, lamps) into any of the 4 AC grounded outlets. Ensure the total power draw does not exceed the unit's maximum rating.
- USB-A Charging Ports: Connect your USB-A powered devices (e.g., smartphones, tablets, power banks) to the 2 USB-A ports. These ports automatically detect your device and deliver optimal charging speeds up to 3.4A total.
- LED Indicators:
- Protected (Green): Indicates that the surge protection is active and functioning correctly.
- Not Grounded (Red): If this light illuminates, it indicates a grounding issue with the wall outlet. Consult a qualified electrician.

Image: The Power Shield XL positioned on a desk, demonstrating its ability to power multiple devices including a laptop and smartphone.
Product Overview Video
Video: An official product video showcasing the features and design of the Monster Power Shield XL, including its outlets, USB ports, and magnetic mounting.
5. Care and Maintenance
- To clean the unit, unplug it from the wall outlet and wipe with a soft, dry cloth.
- Do not use liquid cleaners or aerosol sprays.
- Avoid exposing the unit to extreme temperatures or direct sunlight.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| "Protected" LED is off. | The surge protection components have been consumed by a power surge or spike. | The unit is no longer providing surge protection. Replace the surge protector. |
| "Not Grounded" LED is lit. | The wall outlet is not properly grounded. | Consult a qualified electrician to inspect and correct the wiring of your wall outlet. |
| No power to connected devices. | Surge protector is not plugged in, or the wall outlet has no power. | Ensure the surge protector is securely plugged into a live, grounded outlet. Check the circuit breaker. |
7. Product Specifications
- Model Number: 2MNAC0328W0L2
- Brand: Monster
- Color: White
- Total AC Power Outlets: 4
- USB-A Ports: 2 (up to 3.4A total)
- Surge Protection: 540 Joules
- Voltage: 240 Volts (Input)
- Cable Length: 6 feet (Nylon-braided)
- Item Weight: 2.23 pounds
- Package Dimensions: 10.47 x 7.76 x 2.99 inches
- Manufacturer: Lifeworks Technology, Inc
- Country of Origin: China
8. Warranty Information
For detailed warranty information, please refer to the documentation included with your product or visit the official Monster website. Keep your purchase receipt as proof of purchase for any warranty claims.
9. Customer Support
If you encounter any issues or have questions regarding your Monster Power Shield XL, please visit the Monster support page on their official website for FAQs, troubleshooting guides, and contact information. You can also refer to the Amazon product page for additional resources.
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