Lian Li RB Series 80 PLUS Bronze Power Supply, semi-modular, ATX 3.1 - 550 Watts, black

The Lian Li RB Series 550W is a compact and efficient power supply designed for beginners and budget-conscious gamers. It delivers stable performance, uses high-quality electrolytic capacitors, and its semi-modular design makes installation especially easy. With up to 85% efficiency at half load, it carries the 80 PLUS Bronze certification.

• 550 W of Reliable Power: Ideal for entry-level gaming PCs
• 80 PLUS Bronze: 85% efficiency at 50% load
• Semi-modular Design: Core cables fixed, optional cables modular
• Clean Cable Management: Integrated Velcro straps on three sides
• Modern Standard: ATX 3.1 compliant
• Quiet Cooling: 135mm HDB fan

Reliable Power Delivery

High-quality electrolytic capacitors ensure consistent and stable performance – even at temperatures up to 40 °C. The result is high efficiency, certified with 80 PLUS Bronze (85% at 50% load).

Modern Semi-Modular Power Supply

Installation is straightforward: Essential cables such as the 24-pin ATX for the motherboard and CPU-EPS are permanently attached. A PCIe 6+2-pin powers your graphics card. SATA and peripheral cables can be added as needed via modular connectors – so you only use the cables you really need.

For better organisation, integrated Velcro straps on three sides of the PSU help you bundle excess cables – reducing clutter and improving airflow inside your case.

Quiet & Efficient Cooling

• 135mm HDB fan (larger than standard 120mm)
• More airflow at lower RPM
• 33.2 dB(A) at 1,300 RPM
• Consistent temperatures even under load

The larger fan moves more air at lower speeds, keeping the PSU cool and pleasantly quiet – even during extended gaming sessions.