Lian-Li RB Series 80 PLUS Bronze Netzteil, teilmodular, ATX 3.1 - 550 Watt, schwarz

550 W
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Product details

The Lian Li RB 550B is a powerful and reliable computer power supply designed specifically for the stable operation of PC systems. With a power output of 550 watts and an 80 PLUS Bronze certification, it offers energy efficiency of 82-85 percent under typical load, optimizing power consumption and heat generation. The power supply features a single 12V rail design that allows for a maximum current output of 45.8A, ensuring a stable power supply for critical components such as the CPU and graphics card. The semi-modular cable management solution provides a neat and organized installation, while the 120 mm cooling fan with intelligent temperature control ensures quiet operation. The RB 550B is equipped with comprehensive protection circuits that safeguard connected components against overvoltage, undervoltage, overcurrent, short circuits, and overload.

  • 80 PLUS Bronze certification for high energy efficiency
  • Single 12V rail design for stable power supply
  • Semi-modular cable management for easy installation
  • Intelligent temperature control of the 120 mm cooling fan
  • Comprehensive protection circuits for component safety.

Key specifications

Form factor
ATX
ATX version
3.1
Modularity
Partially modular cable management
Max. noise level
33.20 dB
Internal connection options
24-pin ATX power connector (1x), 4+4-pin 12V (1x), 6+2-pin PCI Express (4x), mSATA (3x)
Power protection features
EIA, OCP, OPP, OVP, SCP

General information

Item number
64814188
Manufacturer
Lian-Li
Category
Power Supply PC
Manufacturer no.
G9P.RB0550B.B000.EU
Release date
4.11.2025
External links
Manufacturer's site (de)

Colour

Colour
Black
Exact colour description
Black

Power supply properties

Form factor
ATX
ATX version
3.1
Efficiency
85%
Modularity
Partially modular cable management
Max. noise level
33.20 dB

Power supply connectors

Internal connection options
24-pin ATX power connector (1x), 4+4-pin 12V (1x), 6+2-pin PCI Express (4x), mSATA (3x)
Cable length
60 cm

Cooling properties

Cooling method
Active cooling
Number of fans
1x
Fan diameter
135 mm
LED colour
without LED

Safety

Power protection features
EIA, OCP, OPP, OVP, SCP

Power supply

Power
550 W

Origin

Country of origin
China

Voluntary climate contribution

CO₂ emissions
378 kg
Climate contribution
CHF 2.54

Product dimensions

Length
15 cm
Width
15 cm
Height
8.60 cm

Package dimensions

Length
30 cm
Width
21 cm
Height
15 cm
Weight
3.29 kg

30-day right of return
24 Months Warranty (Bring-in)
9 additional offers

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Power Supply PC» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 5.Seasonic
    1.1 %
  • 6.Silverstone
    1.2 %
  • 7.Lian-Li
    1.4 %
  • 8.Gigabyte
    1.5 %
  • 9.Deepcool
    1.6 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 9.LC-Power
    2 days
  • 9.Thermaltake
    2 days
  • 12.Lian-Li
    4 days
  • 12.NZXT
    4 days
  • 14.ASUS
    5 days

Return rate

How often is a product of this brand in the «Power Supply PC» category returned?

Source: Digitec Galaxus
  • 10.Corsair
    4.6 %
  • 11.Deepcool
    5.1 %
  • 11.Lian-Li
    5.1 %
  • 13.ASUS
    5.2 %
  • 14.LC-Power
    5.4 %
Source: Digitec Galaxus