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be quiet! System Power U9 400W Bronze BN286 High Efficiency PSU
Safety Features:Overcurrent, overvoltage, undervoltage, short circuit, overtemperature, overpower protection
CPU Support:Supports latest Intel and AMD processors
Supported Standards:ENERGY STAR 6.1, ErP
Warranty:3 years
The be quiet! System Power U9 400W Bronze BN286 is a highly efficient power supply unit designed for users who demand reliable performance and whisper-quiet operation, all while maintaining cost-effectiveness. Engineered in Germany by the renowned brand be quiet!, this PSU delivers rock-solid stability and impressive efficiency, making it an excellent choice for home PCs, offices, and technical workstations.
At its core, the System Power U9 400W features advanced DC-to-DC conversion technology, ensuring precise voltage regulation across two powerful 12V rails. This guarantees your system remains stable even under demanding loads. Boasting an 80 PLUS® Bronze certification, it achieves up to 89% energy efficiency, reducing power consumption and lowering long-term operational costs.
For those who value a silent computing environment, this power supply is equipped with a temperature-controlled 120mm fan. The fan automatically adjusts its speed based on system demands, keeping noise levels impressively low (ranging from just 13.71 to 19.63 dBA depending on load). High-grade black sleeved cables ensure a neat and durable installation, while a full suite of protective features—including overcurrent, overvoltage, undervoltage, short-circuit, over-temperature, and overpower protections—safeguard your valuable components.
The System Power U9 400W BN286 offers sufficient connectivity for modern and legacy systems alike. It includes two PCIe connectors to support powerful graphics cards, five SATA connectors for storage devices, and two PATA connectors for older hardware. Supporting the latest Intel® and AMD™ processors, it complies with the newest energy and environmental standards such as ENERGY STAR 6.1 and ErP, making it ideal for gaming setups, professional studios, and office environments.
Technically, this PSU provides a continuous power output of 400 watts, operates within a voltage range of 100–240V, and boasts a lifespan of up to 100,000 hours at 25°C. Its compact dimensions (140 x 150 x 86 mm) and sleek black finish allow for easy installation in most ATX desktop cases.
To maintain optimal performance, it is recommended to periodically clean the external fan using compressed air and keep the unit away from excessive moisture and heat. The System Power U9 400W comes with a 3-year manufacturer’s warranty, ensuring peace of mind and long-term reliability.
Experience the trusted performance and quiet operation that be quiet! is famous for. The System Power U9 400W Bronze BN286 is your solution for building efficient, stable, and silent PC systems—whether for home, office, or professional use. Power your PC confidently and elevate your computing experience today.
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