1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your Antec EarthWatts EA-500D Green Power Supply. This power supply is designed to deliver reliable and efficient power to your personal computer system.
It features 500 Watts of continuous power, 80 PLUS Bronze certification for energy efficiency, and a quiet 80-millimeter cooling fan. Please read this manual thoroughly before installation to ensure proper setup and to maximize the lifespan of your product.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the power supply or other components.
- Ensure the power supply is disconnected from the AC outlet before installation or maintenance.
- Do not open the power supply casing. High voltages are present inside, even when disconnected.
- Install the power supply in a well-ventilated area.
- Avoid exposing the power supply to moisture or extreme temperatures.
- Use only the provided or compatible cables.
- This power supply is equipped with industrial-grade protection circuitry against short circuits, power overloads, and overvoltage. However, proper installation is crucial.
3. Package Contents
Verify that all items are present in the package:
- Antec EarthWatts EA-500D Green PC Power Supply
- Note: A power cord is not included. Please reuse your existing cord or acquire a compatible one.
4. Setup and Installation
Follow these steps for proper installation of the power supply into your computer chassis.
- Prepare Your System: Ensure your computer is 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 to the motherboard, graphics card, and storage drives. Unscrew and remove the old power supply from the chassis.
- Install New Power Supply: Carefully slide the Antec EarthWatts EA-500D into the power supply bay of your computer case. Secure it with screws from the rear of the chassis.
- Connect Main Power: Connect the 24-pin ATX power connector from the power supply to the corresponding port on your motherboard.
- Connect CPU Power: Connect the ATX/EPS 4+4 pin connector to your motherboard's CPU power input.
- Connect Graphics Card Power: If your graphics card requires external power, connect the appropriate 6-pin or 6+2 pin PCI-E connectors from the power supply to your graphics card.
- Connect Storage and Peripherals: Connect SATA power connectors to your hard drives, solid-state drives, and optical drives. Use Molex or Floppy connectors for other peripherals as needed.
- Cable Management: Route cables neatly to improve airflow and aesthetics within your case.
- Close Case and Connect Power: Close your computer case. Connect your AC power cord (not included) to the power supply and then to a wall outlet or surge protector.

Figure 4.1: Front view of the Antec EarthWatts EA-500D Green Power Supply, showing the main fan grill and power input/switch.

Figure 4.2: Rear view of the Antec EarthWatts EA-500D Green Power Supply, illustrating the cable bundle exiting the unit.
5. Operating Instructions
Once installed, the Antec EarthWatts EA-500D Green Power Supply operates automatically with your computer system.
- Power On: After connecting the AC power cord, press the power button on your computer case to turn on the system. The power supply will provide the necessary power to all components.
- Quiet Operation: The integrated 80-millimeter fan is designed for low-noise operation, ensuring a quiet computing environment.
- Energy Efficiency: The 80 PLUS Bronze certification ensures high energy efficiency, reducing power consumption and heat generation.
- Universal Input: The power supply automatically adjusts to input voltages between 90-240 VAC, making it compatible with various power grids worldwide without manual adjustment.
6. Maintenance
The Antec EarthWatts EA-500D Green Power Supply requires minimal maintenance.
- Dust Removal: Periodically clean dust from the power supply's fan and vents using compressed air. Ensure the power supply is unplugged before cleaning.
- Ventilation: Ensure that the power supply's fan and vents are not obstructed to maintain proper airflow and cooling.
- Cable Integrity: Occasionally check that all power cables are securely connected and not damaged.
7. Troubleshooting
If you encounter issues with your power supply, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Computer does not power on. | Power cord not connected; Power switch on PSU is off; Loose internal connections; Faulty component. | Ensure AC power cord is securely plugged into the PSU and wall outlet. Check if the power switch on the PSU is in the 'On' position. Verify all internal power connections (24-pin, CPU, PCI-E, SATA) are secure. Test with minimal components connected. |
| System powers on but shuts down unexpectedly. | Overload; Overheating; Faulty component. | Ensure total power draw does not exceed 500W. Check for proper ventilation and clear any obstructions around the PSU fan. Verify all components are correctly installed. |
| Loud noise from power supply. | Fan obstruction; Fan bearing issue. | Disconnect power and carefully check for any obstructions in the fan. If the noise persists, the fan may be faulty. |
If troubleshooting steps do not resolve the issue, please contact Antec customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model | EarthWatts EA-500D Green |
| Continuous Power | 500 Watts |
| Efficiency Certification | 80 PLUS Bronze |
| Fan | 80mm, Low-Noise |
| Input Voltage | 90-240 VAC (Universal Input) |
| Power Factor Correction | Active PFC (up to 99%) |
| Protection Circuitry | Short Circuit Protection (SCP), Over Power Protection (OPP), Over Voltage Protection (OVP) |
| Safety Approvals | UL, CUL, FCC, TUV, CE, CB, C-tick, CCC, BSMI |
| Dimensions (H x W x D) | 3.4 x 5.9 x 5.5 inches (86.4 x 149.9 x 139.7 mm) |
| Weight | 3.6 pounds (1.63 kg) |
| Main Connector | 24-pin ATX |
| CPU Connector | ATX/EPS 4+4 pin |
| PCI-E Connectors | 1 x 6-pin, 1 x 6+2 pin |
| SATA Connectors | 5 |
| Peripheral (Molex) Connectors | Multiple |
| Floppy Connectors | 1 |
9. Warranty and Support
The Antec EarthWatts EA-500D Green PC Power Supply is backed by a three-year manufacturer's limited warranty.
For warranty claims or technical support, please visit the official Antec website or contact their customer service department. Keep your proof of purchase for warranty validation.







