1. Sarrera
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. Segurtasun informazioa
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.
- Ensure the power supply is disconnected from the main power outlet before installation or maintenance.
- Ez ireki elikatze-iturria casing. Bolumen handiatagBarruan daude, eta ez dago erabiltzaileak konpondu beharreko piezarik.
- Install the power supply in a well-ventilated area to prevent overheating.
- Use only the cables provided with the power supply. Using incompatible cables may cause damage.
- Avoid exposing the power supply to moisture or extreme temperatures.
3. Paketearen edukia
Egiaztatu elementu guztiak zure paketean daudela:
- MONTECH APX 550W Power Supply Unit
- AC korronte kablea
- Muntatzeko Torlojuak
- Erabiltzailearen eskuliburua (dokumentu hau)
4. Konfigurazioa
4.1. Instalazio fisikoa
- Ensure your computer case is powered off and unplugged from the wall outlet.
- Remove the side panel of your computer case to access the PSU mounting area.
- 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. Kableen konexioak
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
- 24 pineko ATX plaka basearen konektorea: 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.
- SATA Power konektoreak: 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. Funtzionamendu-argibideak
5.1. Piztu/Itzaltzea
- After all components are connected, plug the AC power cord into the power supply and then into a wall outlet.
- Flip the power switch on the back of the PSU to the 'I' (On) position.
- Press the power button on your computer case to start your system.
- 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. Mantentzea
Mantentze-lan erregularrak zure energia-iturriaren iraupena eta errendimendu optimoa bermatzen laguntzen du.
- Garbiketa: 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.
- Kableen kudeaketa: Ensure cables are neatly routed and do not obstruct airflow within the computer case.
7. Arazoak
If you encounter issues with your MONTECH APX 550W Power Supply, refer to the following common problems and solutions:
| Arazoa | Kausa posiblea | Irtenbidea |
|---|---|---|
| Sistema ez da pizten | 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. |
| Haizearen zarata handia | Dust buildup, fan malfunction | Clean the fan and grille. If noise persists and is excessive, contact support. |
8. Zehaztapenak
| Ezaugarri | Xehetasuna |
|---|---|
| Ereduaren izena | APX 550W |
| Wattage | 550 watt |
| Eraginkortasun Ziurtagiria | 80 PLUS White |
| Forma-faktorea | ATX |
| Hozteko metodoa | Air (120mm Hydraulic Bearing Fan) |
| PFC | PFC aktiboa |
| DC-DC bihurgailua | Bai |
| Segurtasun Mekanismoak | OVP, UVP, OCP, OPP, SCP, OTP |
| Neurriak (L x W x H) | 5.91 x 5.51 x 3.39 hazbete |
| Elementuaren pisua | 3.93 libra (1.79 kilogramo) |
| Gailu bateragarriak | Ordenagailu pertsonala |

Figure 4: DC-to-DC Converter Technology for Stable Power
9. Bermea eta laguntza
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.
Produktu Ofizialaren Bideoak
Product Summary Video
1 bideoa: Laburbilduzview of the MONTECH APX 550W Power Supply, highlighting its key features and benefits.
Produktua amaituview Bideoa
2 bideoa: Produktu zehatzaview of the MONTECH APX 550W Power Supply, showcasing its design and functionalities.