Lian Li RB-550B 550W - PSU, 80 Plus Bronze

The Lian Li RB-550B is an ATX power supply unit with a total power output of 550 watts. It is designed for standard desktop systems requiring consistent and stable power delivery. This unit holds an 80 PLUS Bronze certification, indicating an efficiency level of up to 85% under typical operating loads. The non-modular cabling design means all connectors are permanently attached, which can simplify the initial setup for system builders who do not require custom cable management options.

For thermal management, the PSU incorporates a single 135 mm fan to dissipate heat during operation, producing a noise level of 33.2 dB. The unit is engineered with a comprehensive suite of protection features, including overvoltage (OVP), overcurrent (OCP), and short-circuit protection (SCP), to safeguard internal components from electrical faults. Active Power Factor Correction (PFC) is integrated to improve power quality and efficiency. Its standard dimensions ensure physical compatibility with most ATX-compliant PC cases.

• Delivers a total power output of 550W
• Certified with an 80 PLUS Bronze rating
• Uses a standard ATX power supply form factor
• Features a non-modular cable configuration
• Equipped with a single 135 mm cooling fan
• Includes one 8-pin PCIe power connector
• Provides OVP, OCP, UVP, OPP, SCP, and OTP protections