Lian Li RB 550B, 550W, 80PLUS Bronze, ATX 3.1

This Lian Li brand power supply unit has an 80 PLUS Bronze energy efficiency certificate and a power output of 550W.

The power of 550W is sufficient for basic computer gaming, web browsing, and Office applications use. The unit is designed for a computer with a budget processor, integrated graphics card, small SSD or hard drive. If you decide to upgrade your computer in the future, you should definitely consider purchasing a more powerful power supply.

Thanks to the large 135 mm cooling fan diameter, this power supply is much quieter than average. The fan has a larger blade area, which provides the necessary airflow at lower fan speeds, thereby reducing the overall noise and vibration levels to a minimum.

80 PLUS Bronze energy efficiency certificate, received by this power supply unit, guarantees at least 85% efficiency at 50% load. In other words, for every 100 W of energy the power supply unit receives from the electrical grid, at least 85 W goes to your computer components, while the remaining 15 W is lost as heat.

The color of the block is Melna. The block has flat cables, whose color is Melna.

This power supply unit has been assigned the ATX 2.0 standard. This means that the unit is equipped only with 6-pin and 8-pin connectors, providing 75W and 150W power respectively. It's important to note that this unit will be compatible with RTX 4070 and more powerful cards, but you will need to use the 2x8-pin to 16-pin 12VHPWR adapter included with the graphics card. ATX 2.0 power connectors are not designed to handle the high power fluctuations of modern graphics cards; therefore, if you are building a system with a powerful GPU, such as the RTX 4070, we recommend choosing a power supply unit with the ATX 3.* standard and 12VHPWR (PCIe 5.0) connector.

The power supply unit does not have modular cables; all cables are attached to the power supply unit and are not removable. Despite this, it will work just as well as a power supply unit with modular cables.