1. Introdución
Thank you for choosing the MONTECH APX 550W Non-Modular Power Supply. This power supply unit (PSU) is designed to provide stable and efficient power to your computer components. Featuring DC-to-DC converter technology and 80 PLUS White certification, it ensures reliable performance and reduced energy consumption. This manual will guide you through the installation, operation, and maintenance of your new PSU.

Figure 1: MONTECH APX 550W Power Supply
2. Información de seguridade
Please read and follow all safety instructions carefully before installing or operating the power supply. Failure to do so may result in personal injury or damage to your equipment.
- Asegúrese de desconectar a fonte de alimentación da toma de corrente principal antes da instalación ou do mantemento.
- Non abra a fonte de alimentación casing. Alto volumetagHai pezas no interior e non hai pezas que o usuario poida reparar.
- Instale a fonte de alimentación nunha zona ben ventilada para evitar o sobrequecemento.
- Use only the cables provided with the power supply. Using incompatible cables may cause damage.
- Evite expoñer a fonte de alimentación á humidade ou a temperaturas extremas.
3. Contido do paquete
Verifica que todos os elementos estean presentes no teu paquete:
- MONTECH APX 550W Power Supply Unit
- Cable de alimentación de CA
- Parafusos de montaxe
- Manual de usuario (este documento)
4. Configuración
4.1. Instalación física
- Ensure your computer case is powered off and unplugged from the wall outlet.
- Retire o panel lateral da caixa do ordenador para acceder á zona de montaxe da fonte de alimentación.
- Position the MONTECH APX 550W PSU into the designated bay in your computer case, typically at the bottom or top rear. Ensure the fan faces the correct direction for optimal airflow (usually facing downwards if there's a vent, or upwards if not).
- Secure the PSU to the case using the provided mounting screws.
4.2. Conexións por cable
The MONTECH APX 550W features a non-modular design with flat cables for improved thermal efficiency and easier cable management. Connect the necessary cables to your components:

Figure 2: Flat Cable Design and Connectors
- Conector de placa base ATX de 24 pines: Connect this to the main power socket on your motherboard.
- 4+4-pin CPU Power Connector: Connect this to the CPU power socket on your motherboard. Some motherboards may require only 4 pins.
- 6+2-pin PCIe Power Connectors: Connect these to your graphics card(s). Use the 6-pin or 8-pin configuration as required by your GPU.
- Conectores de alimentación SATA: Connect these to your SATA hard drives, SSDs, and optical drives.
- Molex Power Connectors: Connect these to any peripherals that require Molex power, such as older fans or accessories.
Ensure all connections are secure and properly seated. Organize cables to maintain good airflow within the case.
5. Instrucións de funcionamento
5.1. Acendido/apagado
- Despois de conectar todos os compoñentes, conecte o cable de alimentación CA á fonte de alimentación e despois a unha toma de corrente.
- Flip the power switch on the back of the PSU to the 'I' (On) position.
- Preme o botón de acendido da caixa do teu ordenador para iniciar o sistema.
- To power off, shut down your operating system normally, then flip the PSU switch to 'O' (Off) if desired for complete power disconnection.
5.2. Smart Zero Fan Feature
The MONTECH APX 550W is equipped with a 120mm hydraulic bearing fan designed for silent operation and efficient cooling. The fan operates intelligently, adjusting its speed based on the power supply's load and temperature to minimize noise while maintaining optimal thermal performance.

Figure 3: 120mm Hydraulic Bearing Fan
6. Mantemento
Un mantemento regular axuda a garantir a lonxevidade e o rendemento óptimo da súa fonte de alimentación.
- Limpeza: Periodically clean the exterior of the power supply and its fan grille to prevent dust buildup. Use compressed air to gently remove dust from the fan blades and internal components. Ensure the PSU is unplugged before cleaning.
- Xestión de cables Ensure cables are neatly routed and do not obstruct airflow within the computer case.
7 Solución de problemas
If you encounter issues with your MONTECH APX 550W Power Supply, refer to the following common problems and solutions:
| Problema | Causa posible | Solución |
|---|---|---|
| O sistema non se acende | Loose power connections, PSU switch off, faulty components | Check all cable connections (24-pin, CPU, PCIe). Ensure PSU switch is 'On'. Test with a different power cord or outlet. |
| System powers on but no display | Graphics card not powered, RAM issues | Ensure PCIe power cables are securely connected to the graphics card. Reseat RAM modules. |
| System randomly shuts down | Overheating, power fluctuations, faulty PSU | Check for proper ventilation and dust buildup. Ensure stable power source. If issues persist, contact support. |
| Ruído do ventilador forte | Dust buildup, fan malfunction | Clean the fan and grille. If noise persists and is excessive, contact support. |
8. Especificacións
| Característica | Detalle |
|---|---|
| Nome do modelo | APX 550W |
| Wattage | 550 vatios |
| Certificación de eficiencia | 80 PLUS White |
| Factor de forma | ATX |
| Método de arrefriamento | Air (120mm Hydraulic Bearing Fan) |
| PFC | PFC activo |
| Convertidor DC a DC | Si |
| Mecanismos de seguridade | OVP, UVP, OCP, OPP, SCP, OTP |
| Dimensións (L x W x H) | 5.91 x 5.51 x 3.39 polgadas |
| Peso do elemento | 3.93 libras (1.79 quilogramos) |
| Dispositivos compatibles | Ordenador persoal |

Figure 4: DC-to-DC Converter Technology for Stable Power
9. Garantía e soporte
The MONTECH APX 550W Power Supply comes with a comprehensive 5-year warranty, providing coverage against defects and issues. This ensures long-term reliability and peace of mind for your investment.

Figure 5: 5-Year Warranty and Safety Features
For technical support, warranty claims, or any questions regarding your product, please visit the official Montech website or contact their customer service directly. Please have your product model and serial number ready when contacting support.
Vídeos oficiais de produtos
Vídeo de resumo do produto
Vídeo 1: Un breve resumoview of the MONTECH APX 550W Power Supply, highlighting its key features and benefits.
Produto rematadoview Vídeo
Vídeo 2: Un produto detalladoview of the MONTECH APX 550W Power Supply, showcasing its design and functionalities.





