FSP SP400-AD 350W ATX Power Supply Unit with Active PFC and 85% Efficiency

The FSP SP400-AD 350W ATX Power Supply Unit with Active PFC and 85% Efficiency is designed to reliably power modern computer systems equipped with mid-range processors and high-speed storage devices. Featuring an eco-friendly build, this ATX power supply delivers up to 85% efficiency at a 50% load, reducing energy waste and heat generation. It provides a comprehensive set of connectors, including four SATA interfaces and dual 4-pin 12V CPU connectors, making it well-suited for contemporary hardware setups. Built with rigorous safety and circuit protection mechanisms, it ensures stable and safe operation for all connected components.

Advantages

This power supply unit incorporates an active power factor correction (Active PFC) filter to improve electrical efficiency and stability. It maintains a quiet operation with a noise level under 25 dB at typical loads, ensuring a comfortable working or gaming environment. Compliance with Energy Star 6.0 and the ErP 2013 directive guarantees low standby power consumption under 0.5W. Furthermore, the unit features full circuit protection covering overvoltage, power overload, short circuit, overcurrent, and overheating to safeguard internal computer hardware against electrical faults.

Suitable for

• Powering standard office desktop computers
• Mid-range home PC builds with modern processors
• Systems utilizing high-speed hard drives and solid-state drives
• Setups requiring reliable ATX form factor power distribution

When it may not be suitable

This unit is not designed for high-end gaming computers equipped with power-demanding multi-GPU configurations or extreme enthusiast processors that require a significantly higher wattage output than 350 W. It is also unsuitable for industrial server environments that demand redundant power supply modules.

Key specifications

• Power output: 350 W
• Form factor: ATX
• Efficiency: up to 85% at 50% load
• Active PFC filter
• Cooling fan size: 120 mm
• Noise level: less than 25 dB at typical load
• Input power range: 180 to 265 V
• MTBF: 100,000 hours at full load
• Connectors: 1x 24-pin motherboard, 2x 4-pin 12V CPU, 1x PCI-E 6+2 pin, 1x PCI-E 6 pin, 4x SATA, 2x Molex, 1x Floppy
• Protections: OVP, OPP, SCP, OCP, OTP

How to use

Ensure the computer system is completely powered off and unplugged from the wall outlet before installation. Mount the power supply unit inside a compatible ATX computer case using the appropriate screws. Connect the 24-pin main power cable and the 4-pin 12V CPU cables to the corresponding headers on the motherboard. Attach the necessary PCIe cables to the graphics card and connect SATA or Molex cables to storage drives and other peripherals. Verify that all connections are secure before restoring power to the system.

What to consider before purchase

• Verify that the 350 W power output is sufficient for all internal components of your PC build
• Check the physical dimensions of the power supply to ensure compatibility with your computer case
• Confirm that the available connector types and quantities match your hardware requirements

Usage recommendations

Always operate the power supply within the specified ambient temperature range of 0 to 40 °C and ensure unobstructed airflow around the 120 mm cooling fan to maintain optimal performance and longevity.