Rosewill Glacier 850M 850W 80 Plus Bronze Semi-Modular Power Supply User Manual

1. Introduction

This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Rosewill Glacier 850M 850W 80 Plus Bronze Semi-Modular Power Supply. Please read this manual thoroughly before installation and retain it for future reference.

Safety Information

• Always disconnect the power supply from the AC outlet before installing or removing any components.
• Do not open the power supply unit. High voltages are present inside, and opening the unit will void the warranty.
• Ensure proper grounding to prevent electrical shock.
• Install the power supply in a well-ventilated area.
• Use only the cables provided with the power supply.

2. Product Overview

The Rosewill Glacier 850M is an 850-watt semi-modular power supply designed for desktop computer systems. It features 80 Plus Bronze certification for efficiency and a silent 135mm fan with automatic speed control for optimal cooling and low noise levels.

Key Features:

• 80 Plus Bronze Certified: Delivers 82% to 87% or more efficiency at normal loading conditions.
• Semi-Modular Design: Allows for cleaner cable management by connecting only necessary cables.
• Intelligent Thermal Operation: Silent 135mm fan with auto fan speed control provides efficient cooling at low noise levels.
• Comprehensive Protections: Includes Short-Circuit, Over-Current, Over-Voltage, Over-Power, Under-Voltage, and Over-Temperature Protections.
• Strong Single +12V Rail: Ensures stable and high-efficiency power delivery.

Figure 2.1: Rosewill Glacier 850M Power Supply Unit.

Figure 2.2: Rosewill Glacier 850M Power Supply and retail packaging.

3. Installation Guide

3.1 Physical Installation

1. Ensure your computer is powered off and disconnected from the AC outlet.
2. Remove the side panel of your computer case.
3. If replacing an existing PSU, remove its mounting screws and carefully slide it out.
4. Place the Rosewill Glacier 850M into the PSU mounting bay of your computer case. Ensure the fan is facing the correct direction (usually downwards for bottom-mounted PSUs, or as per case design for optimal airflow).
5. Secure the PSU to the case using the provided mounting screws.

3.2 Cable Connections

The Glacier 850M features a semi-modular design, allowing you to connect only the cables required for your system. Refer to the modular port layout and cable specifications below.

Figure 3.1: Modular cable connection ports on the PSU.

Figure 3.2: Table of included cable types and lengths for Glacier 850M.

1. 20+4 Pin Main Power Connector: Connect the fixed 20+4 pin cable to your motherboard's main power socket.
2. 8 Pin EPS (CPU) Connector: Connect the appropriate 8-pin (or 4+4 pin) CPU cable(s) to your motherboard's CPU power socket(s).
3. PCI-E Connectors: For graphics cards, connect the required 6+2 pin PCI-E cables to the GPU and the corresponding modular ports on the PSU.
4. SATA & Molex Connectors: Connect SATA cables for SSDs/HDDs and Molex cables for other peripherals (e.g., case fans, optical drives) as needed.
5. FDD Adapter: Use if your system requires a Floppy Disk Drive power connection.
6. Ensure all connections are secure and cables are routed to allow for good airflow within the case.
7. Close your computer case and reconnect the AC power cable to the PSU and the wall outlet.

4. Operation

Once installed and connected, your Rosewill Glacier 850M Power Supply is ready for operation. The unit's 135mm fan features automatic speed control, adjusting its rotation based on the power supply's temperature to maintain optimal cooling while minimizing noise.

Powering On/Off

• Use the power switch located on the rear of the PSU to turn the unit on or off.
• Always ensure the power switch is in the 'On' position before attempting to power on your computer.

Figure 4.1: Rear view of the PSU showing the power switch and AC inlet.

5. Maintenance

Regular maintenance helps ensure the longevity and optimal performance of your power supply.

• Cleaning: Periodically clean the exterior of the power supply and the fan grille to prevent dust buildup. Use compressed air to gently clear dust from inside the unit (without opening the casing).
• Airflow: Ensure that the computer case has adequate airflow and that the power supply's fan is not obstructed.
• Cable Management: Periodically check cable connections to ensure they are secure and not interfering with airflow.

6. Troubleshooting

If you encounter issues with your power supply, refer to the following common troubleshooting steps:

• No Power:
  • Check if the AC power cable is securely connected to both the PSU and the wall outlet.
  • Ensure the power switch on the rear of the PSU is in the 'On' position.
  • Verify that the wall outlet is functional by plugging in another device.
  • Check all internal power connections (20+4 pin, CPU, PCIe) to ensure they are firmly seated.
• System Instability/Random Shutdowns:
  • Ensure your power supply's wattage is sufficient for all your components.
  • Check for proper ventilation within your computer case to prevent overheating.
  • Verify that all modular cables are correctly and securely connected to the PSU and components.
• Loud Fan Noise:
  • Clean the fan grille and ensure no obstructions are present.
  • Ensure the PSU is not operating under excessive load, which can cause the fan to spin faster.

If issues persist after troubleshooting, contact Rosewill customer support.

7. Specifications

Figure 7.1: Specification label on the Rosewill Glacier 850M PSU.

8. Warranty and Support

Warranty Information

The Rosewill Glacier 850M Power Supply comes with a 3-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.

Customer Support

For technical assistance, troubleshooting, or warranty inquiries, please visit the official Rosewill website or contact their customer support directly. Refer to your product packaging or the Rosewill website for the most current contact information.