Lian Li RB0550B 550W 80+ Bronze ATX 3.1 PCIe 12V-2x6 Non-Modular PSU

Lian Li RB Series RB0550B delivers reliable 550W power for everyday gaming and creator PCs. Certified 80 PLUS Bronze with up to 85% efficiency, it reduces heat and energy use while supporting ATX 3.1 standards and next-gen GPUs via native 12V-2×6 PCIe connector plus 2x 6+2-pin PCIe cables.

Featuring unique integrated cable management with deep routing channels and Velcro straps on three sides, it keeps builds clean and improves airflow. The 135mm HYB smart fan (1300 RPM max, 33.2dBA) provides superior cooling at low noise levels. Built with 105°C Japanese capacitors, single high-amperage +12V rail (549.6W), and DC-to-DC design for stable output up to 40°C.

• ✅ ATX 3.1 compliant with PCIe Gen 5.1 12+4pin (12V-2×6)
• ✅ Non-modular with organized cable exits for back-connect cases
• ✅ Full protections: OPP, OVP, SCP, OCP, UVP, OTP
• ✅ Compact 150x150x86mm size fits most ATX cases
• ✅ 5-year warranty and 100,000 hours MTBF