1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Sharkoon SilentStorm Cool Zero 750W ATX Power Supply. Please read this manual thoroughly before using the product to ensure proper functionality and safety.
2. Safety Instructions
- Always disconnect the power supply from the AC outlet before installation or maintenance.
- Do not open the power supply casing. High voltages are present inside, which can cause electric shock.
- Ensure proper grounding of your computer system.
- Install the power supply in a well-ventilated area.
- Avoid exposing the power supply to moisture or extreme temperatures.
- Use only the modular cables provided with this power supply. Using incompatible cables may damage the unit or connected components.
3. Package Contents
Verify that all items are present in your package:
- Sharkoon SilentStorm Cool Zero 750W ATX Power Supply Unit
- Modular Cable Set (including motherboard, CPU, PCIe, SATA, and IDE cables)
- AC Power Cord
- Cable Storage Bag
- Mounting Screws
- User Manual (this document)

Figure 3.1: Power Supply Unit with Modular Cables and Storage Bag
4. Product Overview
The Sharkoon SilentStorm Cool Zero 750W is an 80 PLUS Gold certified ATX power supply designed for reliable and efficient performance. It features a fully modular design, allowing for cleaner cable management and improved airflow within your PC case. High-quality 105°C Japanese capacitors and a 135mm hydrodynamic bearing fan ensure quiet and stable operation.
4.1 Key Features
- 80 PLUS Gold Certification: Achieves at least 90% efficiency at 50% load and 87% efficiency at 20% and 100% load.
- Fully Modular Cable Management: Connect only the cables you need, reducing clutter.
- High-Quality Components: Utilizes 105°C Japanese capacitors for enhanced durability and stability.
- 135mm Hydrodynamic Bearing Fan: Provides quiet and efficient cooling with an extended lifespan.
- Customizable Cooling: Features Zero RPM Fan Mode and Fan Delay Mode for optimized thermal management.

Figure 4.1: Front and Side View of the Power Supply

Figure 4.2: Top View with Modular Ports

Figure 4.3: Rear Panel with Switches

Figure 4.4: Detail of Fan Control Switches
5. Setup and Installation
Follow these steps to install your power supply:
- Prepare Your System: Ensure your computer is powered off and disconnected from the AC outlet. Open your PC case.
- Remove Old PSU (if applicable): Disconnect all cables from your old power supply and remove its mounting screws. Carefully take out the old unit.
- Mount the New PSU: Insert the Sharkoon SilentStorm Cool Zero 750W into the power supply bay of your PC case. Secure it with the provided mounting screws.
- Connect Essential Cables:
- Connect the 24-pin ATX motherboard cable to the corresponding port on your motherboard.
- Connect the 4+4-pin or 8-pin CPU power cable to the CPU power connector on your motherboard.
- Connect Peripheral Cables: Connect any necessary PCIe (for graphics cards), SATA (for storage drives), and IDE (for older peripherals) cables to the modular ports on the power supply and then to your components. Only connect the cables you need to minimize clutter.
- Cable Management: Route cables neatly to improve airflow and aesthetics.
- Close Case and Connect AC Power: Close your PC case. Connect the AC power cord to the power supply and then to a wall outlet.
6. Operating Instructions
After installation, ensure the main power switch on the rear of the PSU is in the 'ON' position. You can then power on your computer.
6.1 Fan Control Modes
The SilentStorm Cool Zero 750W features two customizable fan modes, controlled by switches on the rear panel:
- Zero RPM Fan Mode: When this mode is active (switch set to 'ON'), the power supply fan will remain off at low to medium loads, providing silent operation. The fan will automatically activate when the load increases to maintain optimal temperatures. If the switch is set to 'OFF', the fan will always spin.
- Fan Delay Mode: If enabled (switch set to 'ON'), the power supply fan will continue to run for approximately 60 seconds after the system is shut down. This helps to dissipate residual heat and ensures complete cooling of the system components. If the switch is set to 'OFF', the fan will stop immediately upon system shutdown.
7. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your power supply.
- Dust Cleaning: Periodically clean the fan grille and interior of your PC case to prevent dust buildup. Dust can impede airflow and reduce cooling efficiency. Use compressed air to gently remove dust from the power supply's fan and vents.
- Inspection: Occasionally inspect cables for any signs of wear or damage. Ensure all connections are secure.
- Safety: Always disconnect the power supply from the AC outlet before performing any cleaning or inspection.
8. Troubleshooting
If you encounter issues with your power supply, refer to the following common problems and solutions:
- No Power:
- Ensure the AC power cord is securely connected to both the power supply and the wall outlet.
- Check that the main power switch on the rear of the PSU is in the 'ON' position.
- Verify that the wall outlet is functional.
- Confirm all modular cables are correctly seated in both the PSU and the components.
- System Instability/Crashes:
- Ensure your power supply wattage is sufficient for all your components.
- Check for loose cable connections.
- If overclocking, return to default settings to rule out power delivery issues.
- Excessive Fan Noise:
- Check if Zero RPM Fan Mode is enabled. If so, the fan will only spin under higher loads.
- Clean any dust buildup from the fan and vents.
- Ensure the power supply is securely mounted to prevent vibrations.
If problems persist after attempting these solutions, contact Sharkoon customer support or a qualified technician.
9. Specifications
| Feature | Specification |
|---|---|
| Brand | Sharkoon |
| Series | SilentStorm Cool Zero |
| Model Number | 4044951026470 |
| Form Factor | ATX |
| Output Wattage | 750W |
| Efficiency Certification | 80 PLUS Gold |
| Cooling Method | Air (135mm Hydrodynamic Bearing Fan) |
| Power Supply Design | Full Modular |
| Connector Type | ATX |
| Compatible Devices | Personal Computer |
| Item Weight | 2.6 Kilograms |
10. Warranty and Support
For warranty information and technical support, please refer to the official Sharkoon website or contact your local retailer. Keep your proof of purchase for warranty claims.





