Introducció
The Enermax DIGIFANLESS 550W is a state-of-the-art power supply unit (PSU) designed for systems requiring silent operation and high efficiency. This PSU features an 80 PLUS Platinum certification, ensuring up to 93% power efficiency. Its fanless design provides 0 dBA sound output, making it ideal for home theater PCs or noise-sensitive environments. The integrated Zero Delay Power Monitoring System (ZDPMS) offers real-time digital control and monitoring capabilities, allowing users to manage output voltage, protection settings, and 12V rail configurations. The full modular cabling with individually sleeved wires simplifies installation and cable management. Built with 100% 105°C Japanese electrolytic capacitors and a unique Copper-Bridge Array, this unit ensures maximum durability, stability, and efficient power delivery.

Figura 1: Part frontal view of the Enermax DIGIFANLESS 550W Power Supply, showcasing its fanless design and modular connectors.
Configuració i instal·lació
Before beginning installation, ensure your system is powered off and disconnected from the main power outlet. Refer to your computer case and motherboard manuals for specific installation guidelines.
1. Muntatge de la font d'alimentació
- Carefully place the Enermax DIGIFANLESS 550W PSU into the designated PSU bay in your computer case.
- Alineeu els forats dels cargols de la font d'alimentació amb els de la carcassa.
- Fixeu la font d'alimentació amb els cargols de muntatge proporcionats. No l'estrengueu massa.

Figura 2: Part posterior view of the Enermax DIGIFANLESS 550W Power Supply, showing the power input and main switch.
2. Connexió de cables modulars
The DIGIFANLESS 550W features a full modular design, allowing you to connect only the cables necessary for your system. This improves airflow and cable management.
- Cable de placa base ATX de 24 pins: Connecteu aquest cable al connector d'alimentació principal de la placa base.
- CPU (EPS/ATX 4+4-pin) Cable: Connect to the CPU power connector on your motherboard. Modern motherboards may require an 8-pin connector.
- PCI-E (6+2-pin) Cables: Connect these to your graphics card(s). Ensure you use enough connectors for your specific GPU.
- Cables d'alimentació SATA: Connecteu-vos a dispositius SATA com ara SSD, HDD i unitats òptiques.
- Cables perifèrics (Molex): Connect to older peripherals or case fans if needed.
- Cable USB: Connect the provided USB cable from the PSU to an available USB header on your motherboard for ZDPMS software functionality.
Ensure all cables are securely seated. Improper connections can lead to system instability or damage.

Figura 3: lateral view of the Enermax DIGIFANLESS 550W Power Supply, highlighting the modular cable connection ports.
Operating the ZDPMS Software
The Zero Delay Power Monitoring System (ZDPMS) software provides comprehensive control and real-time monitoring of your PSU. Install the ZDPMS software from the official Enermax weblloc web o els suports inclosos.
Característiques principals:
- Real-Time Power Status Monitoring: View total output power, efficiency, and internal temperature.
- Electricity Calculator: Estimate electricity fees and CO2 emissions based on your region's average electricity rate.
- DC Output Current Monitoring: Monitor current draw on individual voltage rails (+3.3V, +5V, +12V).
- Single / Multiple 12V Rails Switchable: Adjust the 12V rail configuration between single and multiple rails to suit your system's needs.
- Protection Warning Point Setup: Customize Over Current Protection (OCP) and Over Voltage Protection (OVP) warning thresholds for enhanced safety.
- 12 V Voltage Output Adjustment: Fine-tune the 12V output voltage, useful for overclocking or specific test platform applications.
The ZDPMS software provides a user-friendly interface to manage these settings. Always exercise caution when adjusting voltage and protection settings.
Video 1: An official Enermax video demonstrating the features and functionality of the DIGIFANLESS 550W Power Supply and its ZDPMS software.
Manteniment
The Enermax DIGIFANLESS 550W PSU is designed for reliable, long-term operation. Due to its fanless design, it requires minimal maintenance, but regular checks are recommended to ensure optimal performance.
- Eliminació de pols: Periodically inspect the PSU's ventilation grilles for dust accumulation. Use compressed air to gently clear any dust, ensuring good airflow.
- Gestió de cables: Ensure all modular cables are neatly routed and not obstructing airflow within the case.
- Condicions ambientals: Operate the PSU within its specified temperature and humidity ranges. Avoid placing the computer in enclosed spaces that restrict airflow.

Figura 4: superior view of the Enermax DIGIFANLESS 550W Power Supply, showing the honeycomb grille for passive heat dissipation.
Resolució de problemes
If you encounter issues with your Enermax DIGIFANLESS 550W PSU, refer to the following common troubleshooting steps:
- Sense energia:
- Ensure the main power cable is securely connected to both the PSU and the wall outlet.
- Verify the PSU's power switch on the rear is in the 'ON' position.
- Comproveu totes les connexions dels cables modulars a la font d'alimentació i als components (placa base, CPU, GPU).
- Inestabilitat/Avaries del sistema:
- Use the ZDPMS software to monitor voltage and temperature. High temperatures or unstable voltages can indicate an issue.
- Ensure your system's power draw does not exceed the PSU's 550W capacity.
- Check for any warning messages from the ZDPMS software (e.g., Over Temperature, Over Voltage, Over Current).
- ZDPMS Software Not Detecting PSU:
- Verify the USB cable connecting the PSU to the motherboard is correctly installed.
- Ensure the ZDPMS software is installed correctly and is the latest version.
- Proveu de reiniciar l'ordinador.
If problems persist after following these steps, contact Enermax customer support for further assistance.
Especificacions
| Característica | Especificació |
|---|---|
| Marca | Enermax |
| Número de model | EDF550AWN |
| Pes de l'article | 8.15 lliures |
| Dimensions del producte (LxWxH) | 13.5 x 4.5 x 10 polzades |
| Color | Negre |
| Font d'alimentació | Elèctric amb cable |
| Voltage | 120 Volts |
| Certificació d'eficiència | 80 PLUS Platí |
| Funcionament sense ventilador | Yes (0 dBA) |
| Disseny Modular | Full Modular with Individually Sleeved Cables |
| Condensadors | 100% 105°C Japanese Electrolytic Capacitors |
| Característiques de protecció | OCP, OVP, UVP, OPP, OTP, SCP & SIP |
| Control digital | Zero Delay Power Monitoring System (ZDPMS) |
Garantia i Suport
Enermax products are manufactured to the highest quality standards. For information regarding warranty coverage, terms, and conditions, please refer to the warranty card included with your product or visit the official Enermax website. For technical support, troubleshooting assistance, or service inquiries, please contact Enermax customer support through their official channels.
Assistència en línia: www.enermax.com