Description
The LIAN LI RB550B serves as a reliable foundation for modern PC builds, adhering to the latest ATX 3.1 standards. This 550W unit delivers 80 PLUS Bronze efficiency, ensuring up to 85% energy conversion under typical loads. Its standout feature is the native 12V-2x6 connector, which provides direct power to next-generation GPUs without the need for cumbersome adapters. The compact 150mm chassis is engineered for maximum compatibility, fitting easily into a wide range of ATX cases while leaving ample room for airflow.
This product is for:
- Builders using back-connector motherboards (such as ASUS BTF or MSI Project Zero) who require specialized cable routing.
- Entry-level gamers looking for a future-proof ATX 3.1 power supply for mid-range GPUs.
- Users with compact ATX or Micro-ATX cases where space for cable management is limited.
- Budget-conscious enthusiasts who prioritize safety with OVP, UVP, OCP, OPP, OTP, and SCP protections.
- System integrators seeking a reliable, non-modular unit with integrated Velcro cable management.
Detailed specifications:
- Model: RB0550B
- Standard: ATX 3.1 / PCIe 5.1
- Efficiency: 80 PLUS Bronze
- Dimensions: 150mm (D) x 150mm (W) x 86mm (H)
- Cooling: 135mm HYB Intelligent Fan (1300 RPM max)
- Noise Level: 33.2 dBA
- Protection: OVP, UVP, OCP, OPP, OTP, SCP
- Input Voltage: 100-240Vac, 8A, 50-60Hz
- MTBF: >100,000 hours at 25°C
Operating the RB550B is characterized by its quiet thermal management, thanks to the 135mm HYB intelligent fan that maintains a low 33.2 dBA noise profile. The installation process is streamlined by the three-sided cable outlet design, which is particularly effective for routing cables behind the motherboard tray. Integrated Velcro straps and dedicated routing channels ensure that even with a non-modular design, the interior of the chassis remains organized and unobstructed for optimal cooling.
In comparison to older ATX 2.4 power supplies, the RB550B offers superior transient load handling and includes the updated 12V-2x6 connector required for the latest hardware standards. While it provides lower peak wattage than the RB750B, it maintains the same high-quality safety certifications and specialized cable exit design. It represents a more cost-effective solution for users who do not require the higher power overhead of 650W or 750W models but still want ATX 3.1 compatibility.
Q&A:
- Does the RB550B support the latest NVIDIA GPUs? Yes, it includes a native 12V-2x6 connector compatible with PCIe 5.1 standards.
- Is this power supply compatible with back-connector motherboards? Yes, the three-sided cable outlet is specifically designed to accommodate back-connector layouts.
- What is the warranty for this product? The LIAN LI RB550B comes with a 5-year manufacturer warranty.
- How loud is the fan during operation? The 135mm HYB fan operates at a maximum of 33.2 dBA, providing a quiet environment for daily tasks.
- What safety protections are included? It features six layers of protection: Over Voltage, Under Voltage, Over Current, Over Power, Over Temperature, and Short Circuit Protection.
