1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your Rosewill VSB 650W 80+ Bronze Semi-Modular ATX 3.1 Power Supply (Model VSB650). Please read this manual thoroughly before installation and retain it for future reference.
The Rosewill VSB 650W power supply is designed to deliver stable and efficient power to your computer system. Key features include:
- Intel ATX 3.0 & 3.1 Ready for broad compatibility.
- 80 PLUS Bronze Certified for energy efficiency.
- Semi-Modular design for improved cable management.
- Native PCIe 5.1 / Gen 5 12V-2x6 Connector for next-generation GPUs.
- Optimized Thermal Control with a 120mm ICB Silent Fan.
- Compact chassis (140x150x86mm) for flexible integration.
- Advanced six-protection suite (OCP/OPP/OTP/OVP/SCP/UCP) for system safety.
Image: Front-top view of the Rosewill VSB 650W Power Supply, showcasing its black finish and fan grille.
2. Safety Information
Please observe the following safety guidelines to prevent injury and damage to your equipment:
- Do not open the power supply unit. High voltages are present inside, even when the unit is unplugged.
- Do not insert any objects into the fan grille or ventilation openings.
- Ensure the power supply is installed in a well-ventilated area, free from excessive heat, humidity, or dust.
- Use only the cables provided with the power supply. Using incompatible cables may cause damage.
- Connect the power supply to a grounded electrical outlet.
- Before installing or removing the power supply, ensure the system is powered off and the AC power cord is disconnected from the wall outlet.
The Rosewill VSB 650W power supply incorporates an Advanced Protection Suite to safeguard your system:
- OCP (Over Current Protection): Prevents damage from sudden current surges.
- OPP (Over Power Protection): Automatically adjusts power output during overloads.
- OTP (Over Temperature Protection): Guards against critical overheating.
- OVP (Over Voltage Protection): Stabilizes voltage spikes instantly.
- SCP (Short Circuit Protection): Neutralizes short-circuit risks.
- UCP (Under Current Protection): Maintains performance during low voltage conditions.
Image: Visual representation of the advanced protection features integrated into the power supply.
3. Setup and Installation
Follow these steps to properly install your Rosewill VSB 650W power supply into your computer system.
3.1 Unpacking and Inspection
- Carefully remove the power supply from its packaging.
- Inspect the unit for any signs of physical damage. If damage is present, contact your retailer.
- Verify that all included cables and accessories are present.
3.2 Physical Installation
- Ensure your computer system is powered off and unplugged from the wall outlet.
- Open your computer case according to its manufacturer's instructions.
- Locate the power supply mounting area, typically at the top or bottom rear of the case.
- Gently slide the power supply into the designated bay.
- Secure the power supply to the case using the provided screws.
Image: Rear panel of the power supply with the AC power inlet and on/off switch.
3.3 Cable Connections
The Rosewill VSB 650W is a semi-modular power supply, meaning some essential cables are permanently attached, while others can be connected as needed.
Image: Overview of the power supply's modular cable connections and included cables.
- 24-Pin ATX Motherboard Cable: Connect the main 24-pin cable to your motherboard's ATX power connector.
- 4+4 Pin CPU (EPS) Cable: Connect the 4+4 pin CPU cable to your motherboard's CPU power connector. Some motherboards may require only 4 pins, while others require all 8.
- PCIe 5.1 12V-2x6 Connector: For compatible graphics cards, connect the dedicated 12V-2x6 cable directly to the GPU. This cable delivers up to 450W.
- 6+2 Pin PCIe Cables: For graphics cards requiring standard PCIe power, connect the 6+2 pin cables to the modular ports labeled "PCI-E" on the power supply, then to your graphics card.
- SATA Cables: Connect SATA power cables to your storage drives (HDDs, SSDs) and other SATA-powered devices.
- 4-Pin Molex Cables: Connect Molex cables to peripherals that require this type of power connector.
Image: Close-up of the 12V-2x6 PCIe 5.1 connector, designed for direct power delivery to modern GPUs.
Ensure all connections are firm and correctly seated. Route cables neatly to improve airflow and aesthetics within your case.
4. Operating Instructions
4.1 Initial Power On
- After all internal components are connected and the power supply is secured, close your computer case.
- Connect the AC power cord to the power supply's inlet and then to a grounded wall outlet.
- Flip the power switch on the rear of the power supply to the "I" (On) position.
- Press the power button on your computer case to start the system.
4.2 Fan Operation
The Rosewill VSB 650W features a 120mm ICB Silent Fan with optimized thermal control. The fan speed will automatically adjust based on the power supply's temperature and load to maintain optimal cooling while minimizing noise.
4.3 Power Excursion Capabilities
This power supply is designed to handle temporary power spikes, supporting up to 235% power excursion and 300% GPU power excursion, ensuring stability during demanding workloads and transient power demands from modern components.
5. Maintenance
To ensure the longevity and optimal performance of your power supply, periodic maintenance is recommended.
- Dust Removal: Regularly clean the exterior of the power supply and the fan grille to prevent dust buildup, which can impede airflow and cooling. Use compressed air or a soft brush. Ensure the system is powered off and unplugged before cleaning.
- Environmental Conditions: Operate the power supply within recommended environmental conditions (temperature and humidity) as specified in the technical specifications.
- Cable Inspection: Periodically check all cable connections to ensure they are secure and free from damage.
6. Troubleshooting
If you encounter issues with your power supply, refer to the following common troubleshooting steps.
6.1 No Power / System Not Starting
- Check AC Power: Ensure the AC power cord is securely connected to both the power supply and a working wall outlet.
- Power Switch: Verify that the power switch on the rear of the power supply is in the "I" (On) position.
- Internal Connections: Double-check all internal power connections, especially the 24-pin motherboard cable and the 4+4 pin CPU cable, to ensure they are fully seated.
- Short Circuit: Disconnect all modular cables except the essential motherboard and CPU power. If the system powers on, reconnect other components one by one to identify a potential short circuit.
6.2 System Instability / Random Shutdowns
- Overload: Ensure your system's total power consumption does not exceed the power supply's 650W capacity. Use a power calculator if unsure.
- Overheating: Check for proper airflow within your computer case. Ensure the power supply's fan is not obstructed and is spinning.
- Component Issues: Instability can also be caused by other faulty components (RAM, GPU, CPU). Test components individually if possible.
6.3 Unusual Noises
- Fan Noise: A slight fan noise is normal. If the noise is excessive or grinding, ensure no cables are obstructing the fan blades.
- Coil Whine: Some power supplies may exhibit a faint "coil whine" under certain loads. This is generally harmless and does not indicate a defect.
If troubleshooting steps do not resolve the issue, please contact Rosewill customer support.
7. Specifications
Detailed technical specifications for the Rosewill VSB 650W 80+ Bronze Semi-Modular ATX 3.1 Power Supply (Model VSB650).
| Feature | Specification |
|---|---|
| Model Name | VSB650 |
| Output Wattage | 650 Watts |
| 80 PLUS Certification | Bronze |
| Form Factor | ATX |
| Power Supply Design | Semi-Modular |
| ATX Standard | ATX 3.0 & 3.1 Compatible |
| PCIe Connector | Native PCIe 5.1 / Gen 5 12V-2x6 |
| Cooling Method | Air (120mm ICB Silent Fan) |
| Product Dimensions (L x W x H) | 5.51 x 5.9 x 3.38 inches (140 x 150 x 86 mm) |
| Item Weight | 4.59 pounds |
| Capacitors | 105°C/221°F Japanese Capacitor |
| Protection Features | OCP, OPP, OTP, OVP, SCP, UCP |
Image: Detailed electrical specifications label for the VSB650 power supply.
8. Warranty and Support
8.1 Warranty Information
The Rosewill VSB 650W Power Supply comes with a 5-Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
The warranty does not cover damage resulting from:
- Improper installation or operation.
- Accidental damage, abuse, or misuse.
- Unauthorized repairs or modifications.
- Natural disasters or power surges outside of the unit's protection capabilities.
8.2 Customer Support
For technical assistance, warranty claims, or further inquiries, please visit the official Rosewill website or contact their customer support team.
Rosewill Official Website: www.rosewill.com
