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Main image of Lian Li RB550 80 Plus Bronze Non Modular - Low-Noise ATX 550 Watt Power Supply - Cable Management - 135mm Larger Fan - Black (RB0550B)

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Lian Li RB550 80 Plus Bronze Non Modular - Low-Noise ATX 550 Watt Power Supply - Cable Management - 135mm Larger Fan - Black (RB0550B)

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80 PLUS Bronze Certification: Achieves up to 85% efficiency, ensuring energy savings and reliable performance.
Integrated Cable Management for a Cleaner Build: The RB Series power supply includes an innovative cable management system that is seamlessly integrated into the PSU housing.
Quiet and Efficient Cooling with 135mm Fan: The RB Series power supply (150mm x 150mm x 86mm) features a 135mm low-noise fan that optimizes airflow while reducing fan speed.
Design is complemented by a semi-modular setup that allows users to connect SATA and peripheral cables only when necessary.

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

Overview

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80 PLUS Bronze certified up to 85% efficiency.
Compatible with Intel ATX 3.1 specification and designed with native PCIe Gen 5.1 12+4pin modular interface.
Unique cable management structure around PSU
135mm low-noise cooling fan
High amperage single +12V rail design
DC to DC design provide stable operation and enhanced voltage regulation
Built-in industry grade protections: OPPOVPSCPOCPUVPOTP
550W/650W/750W continuous output at 40°C/104°F operating environment.
Dimension: 150mm (W) x86mm (H) x150mm (D).
Safety approvals: CE/CB/cTUVus/TÜV/FCC/BSMI/CCC/KCC/SAA+RCM certifications.
5 years hardware protection.

General
Brand	LIAN LI
Series	RB series

Details
Color	Black
Type	ATX (ATX 3.1 Compatible)
Maximum Power	550 W
Fans	1 x 135 mm HYB Fan
PFC	Active PFC, PF > 0.95 under full load @ 115Vac, 60Hz
Main Connector	20+4Pin
Modular	Non Modular
Energy-Efficient	80 PLUS BRONZE Certified
Protection	OPP/OVP/SCP/OCP/UVP/OTP
Input Voltage	100 - 240 V
Input Frequency Range	8A, 50-60Hz
MTBF	>100,000 Hours
Approvals	CE/CB/cTUVus/TÜV/FCC/BSMI/CCC/KCC/SAA+RCM
Connectors	Main Power (20+4Pin)600mm * 1pc ATX 12V (4+4Pin) EPS 4+4pin 650mm * 2pc PCIe 6+2 600+150mm * 1pc SATA (5Pin) / Peripheral (4Pin) SATA 400+150+150mm + PATA 150mm *1pc

Dimension & Weight
Dimensions	150mm(W)x86mm(H)x150mm(D)
Weight	5 lbs

Details
Energy-Efficient	80 PLUS BRONZE Certified

Additional Information
First Listed on Newegg	October 17, 2025

Warranty & Returns

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Warranty

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Return Policies

Return for refund within: 30 days
Return for replacement within: 30 days
This item is covered by LIAN LI Return Policy

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