Lian Li RB0550B 550W 80+ Bronze ATX 3.1 PCIe 12V-2x6 Non-Modular PSU (Boxed)
Lian Li RB0550B 550W 80+ Bronze PSU with ATX 3.1, native 12V-2x6 PCIe, integrated cable management, 135mm HYB fan (33dBA), and 105°C capacitors for stable, quiet operation in daily builds.
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Discontinued
This item was discontinued and currently is not available for order on our website. The item may become available soon. Please contact us if you need more information regarding the upcoming arrivals.
| PSU (Power Supplies) - Wattage | 500 - 599 W |
|---|---|
| PSU (Power Supplies) - Efficiency Rating | 80 Plus Bronze |
| PSU (Power Supplies) - Color | Black |
| PSU (Power Supplies) - Modularity | Non-modular |
| PSU (Power Supplies) - PCIe GPU Connectors | 1x 12V-2x6 2x 8/6 pins |
| PSU (Power Supplies) - Length | 141-160 mm |
| PSU (Power Supplies) - EPS CPU Connectors | 1x 4+4pin EPS/ATX12V |
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-2x6 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-2x6)
- ✅ 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
| Model | RB0550B |
| ATX12V Version | ATX 3.1 |
| Efficiency | 80 PLUS Bronze |
| DC Output Cable | Non-Modular |
| Dimensions | (D)150 mm x (W)86 mm x (H)150 mm |
| Color | Black |
| PFC | Active PFC, PF > 0.95 under full load @ 115Vac, 60Hz |
| Input Rating | 100-240Vac 8A, 50-60Hz |
| Max. DC Output | 550W |
| Combined +12V | 549.6W |
| Combined +3.3V & +5V | 100W |
| Fan Spec | 135mm HYB Fan |
| Fan RPM | 1300rpm |
| Noise Level | 33.2dBA |
| MTBF | 100,000 hrs minimum 25°C/75% Load |
| Protection | OPP, OVP, SCP, OCP, UVP, OTP |
| Safety Approval | CE/CB/cTUVus/TÜV/FCC/BSMI/CCC/KCC/SAA+RCM |
| Warranty | 5 Years |
| PCIe Connectors | 1x 12V-2x6 (PCIe Gen 5.1) + 2x 6+2-pin |
| EPS CPU Connectors | 1x 4+4pin |