1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Mars Gaming MPB850 850W 80 Plus Bronze PC Power Supply. Please read this manual thoroughly before installation to ensure safe and efficient use of the product.
2. Safety Information
WARNING: Risk of electric shock. Do not open the power supply unit. There are no user-serviceable parts inside.
- Ensure the power supply is disconnected from the main power outlet before installation or maintenance.
- Install the power supply in a well-ventilated area to prevent overheating.
- Use only the cables provided with the power supply.
- This power supply is designed for use with personal computers only.
- The MPB850 includes multiple protection mechanisms: Over Power Protection (OPP), Over Voltage Protection (OVP), Under Voltage Protection (UVP), and Short Circuit Protection (SCP) to ensure system safety.
3. Package Contents
Verify that all items are present in the package:
- Mars Gaming MPB850 850W Power Supply Unit
- AC Power Cord
- Mounting Screws
- User Manual (this document)
4. Product Features
The Mars Gaming MPB850 is a high-performance power supply designed for reliable and efficient operation in personal computers.
- 850W Power Output: Provides ample power for demanding PC configurations.
- 80 Plus Bronze 230V EU Certified: Achieves up to 90% efficiency, reducing energy waste and heat generation.
- SilentRPM Technology: Features an ultra-silent 120mm fan with intelligent thermal control, maintaining noise levels at just 10 dB up to 40% load.
- Active PFC: Power Factor Correction with 99% efficiency for stable power delivery.
- 12V Single Rail Design: Ensures consistent and stable power to critical components.
- Optimized Cabling: Flat, black, and extra-long cables for easy installation and improved cable management.

This power supply is built with industrial-grade filtration systems and has been approved by renowned European testing laboratories, ensuring a high degree of safety and reliability.
5. Setup and Installation
Follow these steps to install your Mars Gaming MPB850 power supply:
- Prepare Your System: Ensure your computer is completely powered off and unplugged from the wall outlet. Open your PC case.
- Remove Old PSU (if applicable): Disconnect all cables from your old power supply and remove its mounting screws. Carefully slide it out of the case.
- Install New PSU: Gently slide the Mars Gaming MPB850 into the power supply bay of your PC case. Ensure the fan is facing the correct direction for optimal airflow (usually facing downwards if your case has a bottom vent, or upwards if it's a top-mounted PSU). Secure the power supply with the provided mounting screws.
- Connect Main Power (20+4 Pin): Connect the large 20+4 pin ATX connector to the corresponding port on your motherboard. Ensure it clicks into place.
- Connect CPU Power (4+4 Pin): Connect the 4+4 pin CPU power connector to the CPU power port on your motherboard. This is usually located near the CPU socket.
- Connect PCI-E Power (6+2 Pin): If you have a dedicated graphics card, connect the 6+2 pin PCI-E connectors to your graphics card. Some high-end cards may require two or more such connectors.
- Connect SATA Devices: Use the SATA power connectors for your SSDs, HDDs, and optical drives.
- Connect PATA Devices: Use the PATA (Molex) connectors for older devices or case fans that require them.
- Cable Management: Utilize the flat, black, and extra-long cables to route them neatly behind the motherboard tray or through designated channels in your case. This improves airflow and aesthetics.
- Close Case and Connect AC Power: Once all connections are secure, close your PC case. Connect the AC power cord to the power supply and then to a wall outlet.


6. Operating Instructions
After successful installation, operating the Mars Gaming MPB850 is straightforward:
- Power On: Ensure the power switch on the back of the power supply is in the 'ON' (I) position.
- Start PC: Press the power button on your computer case. The power supply will provide power to all connected components.
- Fan Operation: The 120mm fan will operate quietly, utilizing SilentRPM technology to adjust its speed based on the power supply's load and temperature, ensuring optimal cooling with minimal noise.
7. Maintenance
Proper maintenance ensures the longevity and optimal performance of your power supply:
- Dust Cleaning: Periodically clean dust from the power supply's fan and vents using compressed air. Ensure the PC is powered off and unplugged before cleaning.
- Airflow: Ensure that the PC case has adequate airflow and that the power supply's intake and exhaust vents are not obstructed.
- Do Not Open: Never attempt to open the power supply unit. It contains high voltage components that can cause severe injury or death. Opening the unit will also void the warranty.
8. Troubleshooting
If you encounter issues with your Mars Gaming MPB850, consider the following:
- No Power:
- Check if the AC power cord is securely connected to both the power supply and the wall outlet.
- Ensure the power switch on the back of the PSU is in the 'ON' (I) position.
- Verify that all internal power cables (20+4 pin, 4+4 pin, PCI-E) are correctly and firmly connected to the motherboard and components.
- Test the wall outlet with another device to confirm it has power.
- Intermittent Power/System Instability:
- Ensure the power supply is adequately rated for all your system components.
- Check for loose cable connections.
- Ensure proper ventilation to prevent overheating.
- Unusual Noise:
- While the SilentRPM fan is designed for quiet operation, excessive noise might indicate dust buildup. Refer to the Maintenance section for cleaning.
- If the noise persists and is not related to dust, contact customer support.
If these steps do not resolve the issue, contact Mars Gaming customer support for further assistance.
9. Specifications
| Feature | Specification |
|---|---|
| Brand | Mars Gaming |
| Model Name | MPB850 |
| Form Factor | ATX |
| Output Power | 850 Watts |
| Efficiency Certification | 80 Plus Bronze 230V EU (up to 90%) |
| PFC | Active PFC (99% efficiency) |
| Cooling Method | Air (120mm SilentRPM Fan) |
| Compatible Devices | Personal Computer |
| Dimensions (L x W x H) | 15 x 14.2 x 8.5 cm |
| Weight | 1.35 Kilograms |
| Color | Black/Red |
| Main Connector | 1 x 20+4 Pin ATX |
| CPU Connector | 1 x 4+4 Pin 12V |
| PCI-E Connectors | 2 x 6+2 Pin |
| SATA Connectors | 4 x SATA |
| PATA (Molex) Connectors | 2 x PATA |
| Protections | OPP, OVP, UVP, SCP |
10. Warranty and Support
Mars Gaming products are designed and manufactured to the highest quality standards. This product is covered by a limited warranty. For detailed warranty terms and conditions, please refer to the warranty information provided with your purchase or visit the official Mars Gaming website.
For technical support, troubleshooting assistance, or warranty claims, please contact Mars Gaming customer service through their official website or the retailer where the product was purchased.





