Lian Li RB 550W Power Supply, 80 Plus Bronze, ATX 3.1, PCIe 5.1 Ready, 135mm Low-Noise Fan, Built-in Cable Management, 5-Year Warranty, Non-Modular - Black (RB550B)

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💡 How to pick a power supply
What to look for:
  • Wattage exceeds total system draw by 20-30% headroom
  • 80+ Gold or higher for efficiency
  • Modular cables reduce clutter in your case
💰 Mid-range builds: 650-750W. High-end with RTX 4080+: 850W-1000W+
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ProductWattsRatingModularColorValuePrice
Lian Li RB 550W Power Supply, 80 Plus Bronze, ATX 3.1, PCIe 5.1 Ready, 135mm Low-Noise Fan, Built-in Cable Management, 5-Year Warranty, Non-Modular - Black (RB550B) PSU
Lian Li RB 550W Power Supply, 80 Plus Bronze, ATX 3.1, PCIe 5.1 Ready, 135mm Low-Noise Fan, Built-in Cable Management, 5-Year Warranty, Non-Modular - Black (RB550B)
Lian Li★★★★★4.5
550W
80+ Bronze
None
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$51.85
Specifications
Watts550W
Rating80+ Bronze
ModularNone
ATX 3.0Yes
Form FactorATX
Customer Reviews★★★★★4.5 · 2 reviews
★★★★★Lian Li Rb 550W 80+
Great product, installed quick and easy and runs my pc perfectly
watson87 · 2026-01-01 · via amazon
★★★★★Quit operation.
Easy installation and performance. Liked the hook and loops straps for cable management. Quiet operation.
George Ruff · 2025-11-15 · via amazon
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Lian Li RB 550W Power Supply, 80 Plus Bronze, ATX 3.1, PCIe 5.1 Ready, 135mm Low-Noise Fan, Built-in Cable Management, 5-Year Warranty, Non-Modular - Black (RB550B) PSU