System Power 11 U - PC Power Supply Be Quiet! - Free user manual and instructions
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| Product Type | PC Power Supply |
| Brand | Be Quiet! |
| Model | System Power 11 U |
| Series | System Power 11 |
| Form Factor | ATX (PS/2) |
| Rated Power | 550 W |
| Dimensions | 150 x 140 x 86 mm (W x L x H) |
| Weight | 1.4 kg (approximately) |
| Input Voltage | 100-240 VAC, 50/60 Hz |
| Efficiency | 80 PLUS Bronze certified (up to 88% at 230V) |
| Cooling System | 120 mm be quiet! fan with FDB bearing |
| Noise Level | Very low noise: < 18 dB(A) max |
| Mainboard Connector | 24-pin ATX (20+4) |
| CPU Connector | 4+4 pin (8 pin) ATX 12V |
| PCIe Connectors | 2 x 6+2 pin for graphics cards |
| SATA Connectors | Up to 6 SATA outputs |
| Peripheral Connectors | 3 x 4-pin Molex |
| Protection Features | OVP, UVP, SCP, OPP |
| Safety Instructions | Do not disassemble; keep away from liquids |
| Maintenance | Clean ventilation slots with a dry cloth |
| Repairability | Fixed cables; service only by qualified technicians |
| Operating Temperature | 0-40 °C |
| General Information | Standard ATX mounting bracket included |
Frequently Asked Questions - System Power 11 U Be Quiet!
What is the rated power of the Be Quiet! System Power 11 U?
This model delivers a continuous rated power of 550W.
Is the System Power 11 U 80 PLUS certified?
Yes, it is 80 PLUS Bronze certified, ensuring high efficiency across typical loads, reducing heat and energy costs.
Are the cables modular?
No, the System Power 11 U uses a non-modular cable design, meaning all cables are permanently attached. This simplifies installation but requires careful cable management.
What connectors are included?
It provides a 20+4 pin mainboard connector, a 4+4 pin CPU power connector, two PCIe 6+2 pin connectors for graphics cards, up to 6 SATA connectors, and 3 Molex peripheral connectors.
What safety protections are built in?
The unit features OVP (Over-Voltage Protection), UVP (Under-Voltage Protection), SCP (Short-Circuit Protection), and OPP (Over-Power Protection) to keep components safe.
How do I clean the power supply?
Use a dry soft cloth to wipe the exterior. For dust accumulation, gently vacuum the ventilation slots while keeping the unit unplugged. Do not use water or solvents.
Can this PSU handle a high-end graphics card?
With two PCIe 6+2 pin connectors and a 550W capacity, it can power most mid-range to high-end graphics cards. Extremely power-hungry GPU configurations may require a higher wattage PSU.
What should I do if my PC shuts down suddenly?
Check if the power supply is overloaded. Ensure that the total system consumption is below the rated wattage. Also verify all cable connections and that the PSU fan is spinning properly.
Is the power supply quiet?
Yes, be quiet! designs for quiet operation. The 120mm fan with fluid-dynamic bearing operates with low noise (< 18 dB(A)), making it ideal for silent builds.
What is the warranty period?
Be Quiet! typically offers a 3-year manufacturer's warranty for this series. Check your retailer for exact terms and conditions.
User questions about System Power 11 U Be Quiet!
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USER MANUAL System Power 11 U Be Quiet!
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Product information
Brand : Be Quiet!
Model : System Power 11 U
Category : PC Power Supply