1. Introduction
The XPG Core Reactor II Power Supply is a high-performance component designed to provide stable and efficient power to your computer system. With 750W of power and 80 Plus Gold certification, it ensures high energy efficiency. Its Full Modular design simplifies installation and cable management. The Active PFC (Power Factor Correction) feature further enhances overall system performance by delivering consistent and reliable power, crucial for demanding PC operations.
2. Safety Information
Please read and understand all safety instructions before installing or operating the power supply. Failure to do so may result in personal injury or damage to the product or other components.
- Electrical Safety: Always disconnect the power cord from the wall outlet before installing, removing, or cleaning the power supply. Ensure your hands are dry when handling electrical components.
- Proper Grounding: Ensure your computer system and the power outlet are properly grounded to prevent electrical shock.
- Ventilation: Do not block the ventilation openings of the power supply. Ensure adequate airflow around the unit to prevent overheating.
- Environment: Operate the power supply in a dry, well-ventilated environment. Avoid exposure to moisture, dust, and extreme temperatures.
- Handling: Handle the power supply with care. Avoid dropping or subjecting it to strong impacts.
- Authorized Service: Do not attempt to open or repair the power supply yourself. Refer all servicing to qualified service personnel. Opening the unit will void the warranty.
3. Package Contents
Verify that all items listed below are present in your package. If any items are missing or damaged, please contact your retailer or XPG support.
- XPG Core Reactor II Power Supply Unit
- Modular Cable Set (including ATX 24-pin, EPS/CPU 4+4-pin, PCIe 6+2-pin, SATA, and Peripheral cables)
- AC Power Cord
- Mounting Screws
- User Manual (this document)

Image: The XPG Core Reactor II Power Supply unit, showcasing its black finish, fan grille, and modular cable ports. The image also implies the presence of various modular cables for system connection.
4. Setup and Installation
Follow these steps to properly install your XPG Core Reactor II Power Supply into your computer system.
- Prepare Your System: Ensure your computer is completely powered off and unplugged from the wall outlet. Open your computer case.
- Remove Old Power Supply (if applicable): Disconnect all cables from your old power supply and remove its mounting screws. Carefully slide it out of the case.
- Mount the New Power Supply: Position the XPG Core Reactor II Power Supply in the designated PSU bay of your computer case. Ensure the fan is oriented correctly (typically facing downwards or upwards depending on case design and ventilation). Secure it with the provided mounting screws.
- Connect Modular Cables: Due to its full modular design, you only need to connect the cables required for your components.
- Motherboard Power: Connect the 24-pin ATX cable to the corresponding port on the power supply and the motherboard.
- CPU Power: Connect the 4+4-pin EPS/CPU cable to the power supply and the CPU power connector(s) on your motherboard.
- Graphics Card Power: Connect the 6+2-pin PCIe cables to the power supply and your graphics card(s). Use separate cables for each connector on high-power GPUs if possible.
- SATA Devices: Connect SATA power cables to your SSDs, HDDs, and optical drives.
- Peripheral Devices: Connect peripheral (Molex) cables for case fans or other accessories as needed.
- Cable Management: Route cables neatly to improve airflow and aesthetics within your case.
- Close Case and Connect Power: Once all connections are secure, close your computer case. Connect the AC power cord to the power supply and then to a wall outlet.
5. Operating Instructions
Operating the XPG Core Reactor II Power Supply is straightforward once installed.
- Power On: Ensure the power switch on the back of the power supply (next to the AC inlet) is in the 'I' (On) position. Then, power on your computer using the case's power button.
- Efficiency: The 80 Plus Gold certification indicates high energy efficiency, meaning less wasted heat and lower electricity consumption compared to less efficient power supplies.
- Active PFC: The Active Power Factor Correction feature automatically adjusts the input current waveform to improve the power factor, leading to more stable and cleaner power delivery to your components.
- Power Off: To shut down your system, use the operating system's shutdown function. For complete power disconnection, switch the power supply's switch to the 'O' (Off) position and unplug the AC power cord.
6. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your power supply.
- Dust Removal: Periodically (e.g., every 3-6 months), power off and unplug your computer. Use compressed air to gently blow dust out of the power supply's fan grille and ventilation openings. Hold the fan blades to prevent them from spinning rapidly during cleaning, which can damage the bearings.
- Cable Inspection: Occasionally check all connected modular cables to ensure they are securely seated and free from damage.
- Environmental Check: Ensure the operating environment remains clean, dry, and within recommended temperature ranges.
7. Troubleshooting
If you encounter issues with your XPG Core Reactor II Power Supply, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| System does not power on. | Power cord not connected, PSU switch off, loose internal cables, faulty component. |
|
| System powers on but shuts down immediately. | Overload, overheating, short circuit, faulty component. |
|
| Unusual noise from PSU. | Fan obstruction, faulty fan bearing. |
|
If the problem persists after trying these steps, please contact XPG customer support for further assistance.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | XPG |
| Model Name | 75261186 |
| Output Wattage | 750 Watts |
| Efficiency Certification | 80 Plus Gold |
| Form Factor | ATX |
| Modularity | Full Modular |
| PFC Type | Active PFC |
| Cooling Method | Air |
| Connector Type | ATX (24 Pin, EPS, PCIe, SATA, Peripheral) |
| Item Weight | 7.35 pounds (approx. 3.33 kg) |
| Package Dimensions | 13.39 x 8.43 x 6.38 inches (approx. 34 x 21.4 x 16.2 cm) |
| Color | Black |
| Maximum Input Voltage | 120 Volts (AC) |
9. Warranty and Support
For warranty information, technical support, or service inquiries regarding your XPG Core Reactor II Power Supply, please visit the official XPG website or contact their customer support directly.
You can also visit the official XPG Store on Amazon for product information and support resources:





