1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Antec EarthWatts EA-650 650W 80 PLUS Bronze Power Supply. Please read this manual thoroughly before installing and using the product to ensure optimal performance and safety.
2. Safety Information
- Always disconnect the power supply from the AC outlet before installation or maintenance.
- Do not open the power supply unit. High voltages are present inside, and there are no user-serviceable parts. Opening the unit will void the warranty.
- Ensure proper grounding to prevent electrical shock.
- Install the power supply in a well-ventilated area, away from heat sources and direct sunlight.
- Use only the cables provided with the power supply.
- Avoid exposing the unit to moisture or extreme temperatures.
3. Package Contents
Verify that all items are present in your Antec EarthWatts EA-650 package:
- Antec EarthWatts EA-650 650W Power Supply Unit
- AC Power Cord
- Mounting Screws
- User Manual (this document)
- Modular Cables (if applicable, check your specific model for modularity)
4. Product Overview
The Antec EarthWatts EA-650 is a 650-watt power supply designed for personal computers, featuring 80 PLUS Bronze efficiency for reduced energy consumption and heat generation. It provides stable and reliable power to your system components.

Figure 1: Rear panel of the Antec EarthWatts EA-650 Power Supply. This image displays the rear panel of the Antec EarthWatts EA-650 power supply. Visible components include the main power switch, the AC power input socket, and a large honeycomb-patterned ventilation grille. The top of the unit shows a circular fan grille.
5. Setup and Installation
5.1. Physical Installation
- Prepare your PC case: Ensure your computer case is powered off and unplugged. Remove the side panel to access the power supply mounting area.
- Mount the power supply: Carefully slide the Antec EarthWatts EA-650 into the designated power supply bay in your PC case. Align the screw holes on the power supply with those on the case.
- Secure the unit: Use the provided mounting screws to firmly attach the power supply to the case. Do not overtighten.
5.2. Cable Connections
Connect the necessary cables to your motherboard and other components. Refer to your motherboard and component manuals for specific connector locations.
- 24-pin ATX Motherboard Connector: Connect this main power cable to the corresponding port on your motherboard.
- 4+4-pin EPS/ATX 12V CPU Connector: Connect this to the CPU power port on your motherboard. Some motherboards may require only 4 pins.
- 6+2-pin PCI-E Connectors: Use these for graphics cards that require auxiliary power. Connect the appropriate number of pins (6 or 8) as required by your GPU.
- SATA Power Connectors: Connect these to SATA devices such as hard drives, solid-state drives, and optical drives.
- Molex (Peripheral) Connectors: Use these for older peripherals or case fans that require Molex power.
- Floppy Connector: If your system includes a floppy drive or other legacy device requiring this connector, attach it.
5.3. Power Connection
- Ensure all internal connections are secure.
- Connect the AC power cord to the power supply's AC inlet (refer to Figure 1).
- Plug the other end of the AC power cord into a grounded wall outlet or surge protector.
6. Operating Instructions
- Power On: Flip the power switch on the rear of the power supply to the 'I' (On) position.
- System Start-up: Press the power button on your computer case to initiate system start-up.
- Power Off: Shut down your operating system normally. Once the system is off, you can flip the power switch on the rear of the power supply to the 'O' (Off) position for complete power disconnection.
7. Maintenance
- Dust Cleaning: Periodically clean the exterior of the power supply and its 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.
- Cable Management: Ensure cables are neatly routed to allow for proper airflow within the PC case.
- Environmental Conditions: Operate the power supply within recommended temperature and humidity ranges to prolong its lifespan.
8. Troubleshooting
If you encounter issues with your Antec EarthWatts EA-650 power supply, refer to the following common troubleshooting steps:
- No Power:
- Check if the AC power cord is securely plugged into both the power supply and the wall outlet.
- Ensure the power supply's rear switch is in the 'I' (On) position.
- Verify that the wall outlet is functional by plugging in another device.
- Confirm all internal power cables (24-pin ATX, CPU, GPU) are correctly seated.
- System Instability/Random Shutdowns:
- Ensure the power supply is adequately rated for all your system components.
- Check for proper ventilation within the PC case to prevent overheating.
- Verify that all power connections are secure and not loose.
- Fan Noise:
- Excessive fan noise can indicate dust buildup. Clean the fan grille as described in the Maintenance section.
- Ensure no cables are obstructing the fan blades.
If issues persist after following these steps, contact Antec customer support or a qualified technician.
9. Specifications
| Feature | Detail |
|---|---|
| Brand | Antec |
| Model Name | Antec EarthWatts EA-650 Green |
| Output Wattage | 650 Watts |
| Form Factor | ATX12V |
| Efficiency Rating | 80 PLUS Bronze |
| Cooling Method | Air |
| Compatible Devices | Personal Computer |
| Connector Types | Floppy, SATA (and others like 24-pin ATX, 4+4-pin EPS, 6+2-pin PCI-E, Molex) |
| Product Dimensions (L x W x H) | 6.1 x 5.91 x 3.39 inches |
| Item Weight | 4.4 pounds (2 Kilograms) |
10. Warranty and Support
Antec products are covered by a limited warranty. For specific warranty terms and conditions applicable to your Antec EarthWatts EA-650 power supply, please refer to the warranty card included with your product or visit the official Antec website. For technical support, product registration, or further assistance, please visit the Antec support portal or contact their customer service department.
You can find more information and support resources on the Antec Official Website.







