be quiet! PURE POWER 12 550W power supply unit 20+4 pin ATX ATX Black

be quiet! PURE POWER 12 550W is an ATX 3.1 compliant power supply unit that delivers 550 W continuous power and up to 600 W peak. It is 80 PLUS Gold certified for high energy efficiency and comes with a 120 mm fan for active cooling. The unit includes a 20+4 pin ATX connector and multiple PCIe cables (PCIe 5.1 and PCIe 6+2) to ensure broad compatibility with modern graphics cards and motherboards.

Advantages

The PSU combines ATX 3.1 compliance and PCIe 5.1 compatibility with efficient 80 PLUS Gold performance and low-noise cooling. Integrated cables for PCIe 5.1 and PCIe 6+2 reduce the need for additional adapters, while the 120 mm fan balances airflow and acoustic performance. With a compact black housing and a weight of 2.3 kg, it fits standard PC builds and offers dependable voltage delivery for stable system operation.

Suitable for

• Home and office desktop PCs requiring a reliable 550 W power supply
• Mid-range gaming systems with single graphics cards compatible with PCIe 5.1 or PCIe 6+2 connectors
• Upgrades to systems needing ATX 3.1 features and improved efficiency

Key specifications

• Total power: 550 W (peak up to 600 W)
• Efficiency: 80 PLUS Gold (approx. 91.2%)
• Motherboard connector: 20+4 pin ATX
• PCIe connectors: includes PCIe 5.1 cable and PCIe 6+2 cables
• Fan diameter: 120 mm
• AC input voltage: 100–240 V
• Color: Black; Weight: 2.3 kg

How to use

Install the PSU into a compatible ATX chassis, secure it with the supplied screws, and connect the 20+4 pin ATX cable to the motherboard. Attach the appropriate PCIe cables to your graphics card(s) as required and connect storage and peripheral power cables. Ensure AC input is within 100–240 V and verify all connections before powering the system on.

Recommendations

For optimal performance and longevity, maintain adequate case ventilation, avoid overloading the PSU beyond its continuous 550 W rating, and use the supplied PCIe 5.1 and PCIe 6+2 cables to maintain proper compatibility with current GPUs.