Welcome to our store! 1. The computer power supply has a clearly marked connector, making installation quick and easy, and the performance is good. 2. Highly suitable for basic desktop systems with low power consumption and low noise. 3. 115-230V manually adjustable voltage, fan speed is automatically controlled by the thermal sensor inside the power supply. 4. Exquisite workmanship and small size, easy to carry and store, convenient to use and with good performance. 5. Uses high-quality materials, strong and durable, has a long service life. Item Type: Computer Power Supply Model: ATX-400W Rated Power: 400W Size: Approx. 140 x 150 x 86mm / 5.5 x 5.9 x 3.4in Fan: Approx. 12cm / 4.7in PFC: No, manual switching Efficiency: >80% Motherboard Interface: 20+4 Pin CPU 12V Interface: 4 Pin+4 Pin Fan Interface: 2 SATA Interface: 3 Graphics Interface: 6+2 Pin Input Voltage: 115V/230V Lifespan: 100,000 hours Hold Time: >10ms Adaptation Line Length: Approx. 1.1meter / 3.6ft 1 x Computer Power Supply 1 x Power Cord Customers are our top priority. If you encounter any issues with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best customer service.