The Lian Li RB550 is a 550W ATX 3.1 power supply unit with 80 PLUS Gold efficiency certification, designed for modern desktop PC builds requiring stable and efficient power delivery.
80 PLUS Gold efficiency reduces power waste and lowers system heat output
ATX 3.1 form factor ensures compatibility with latest Intel and AMD high-end processors
Fixed cable configuration simplifies installation and cable management
Semi-modular design allows selective cable use for cleaner builds
What sets the Lian Li RB550 apart
Lian Li is a recognised Taiwanese manufacturer known for precision-engineered PC components and accessories. The RB550 combines a compact 550W capacity with Gold-level efficiency, making it well-suited for mid-range to high-performance desktop systems that demand reliable power without excess waste.
Ideal for...
Desktop PC builders upgrading or assembling systems around current-generation Intel Core or AMD Ryzen processors. The 550W capacity and ATX 3.1 compliance make it a practical choice for single-GPU workstations and gaming rigs that do not require extreme power headroom.
Application of the Lian Li RB550
Install the unit in a standard ATX mid-tower or full-tower case, routing the fixed cables to the motherboard, CPU, and graphics card as needed. The semi-modular design allows unused cables to be left disconnected, improving airflow inside the chassis.
Lian Li is a Taiwanese manufacturer specialising in PC components and accessories, including power supplies, cases, and cooling products. The brand is recognised for precision engineering and quality-focused design in the enthusiast and mainstream desktop segments.
The Lian Li RB550 is a 550W ATX 3.1 power supply unit with 80 PLUS Gold certification. It supplies stable power to desktop PC components including the motherboard, CPU, and graphics card.
The RB550 uses the standard ATX form factor and is compatible with desktop cases and motherboards that support ATX power supplies. It is designed for Intel and AMD platforms using current-generation processors.
550W nominal output, 80 PLUS Gold efficiency rating, ATX 3.1 form factor, fixed cable configuration, semi-modular design, 2.01 kg weight, black finish.
The unit includes the power supply with fixed cables, mounting screws, and a power cord. A semi-modular design allows selective cable routing.
Lian Li provides a 24-month manufacturer warranty on the RB550, covering defects in materials and workmanship under normal use.
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