Silverstone PSU ET550-B

A high-performance power supply unit designed to meet the needs of modern PC enthusiasts. It features a sleek black finish with lead-free paint and delivers a maximum DC output of 550W. With a power density of 305W per liter, it efficiently supports high-end components and overclocking. The load range includes outputs of +3.3V, +5V, +12V, +5VSB, and -12V, with maximum amperages of 18A, 16A, 42A, 2.5A, and 0.3A respectively. It maintains a stable performance with a range of ±5% for most outputs and ±10% for -12V, and a line regulation of ±1% across all outputs. Ripple values are kept low at 50mV for +3.3V, +5V, and +5VSB, and 120mV for +12V and -12V. The combined power for +3.3V and +5V is 110W, while the +12V output can handle up to 504W. It operates within an input voltage range of 90 to 264 Vrms and a frequency range of 47Hz to 63Hz. The active PFC ensures a power factor greater than 0.9 at full load, contributing to its efficiency ratings of 82% to 85% at 20% to 100% loading. With a mean time between failures (MTBF) of 100,000 hours and an operating temperature range of 0°C to 40°C, the SST-ET550-B is built for reliability. It includes multiple protection features such as over current, over power, over voltage, short circuit, and over temperature protection. The cooling system consists of a single 120mm silent fan, maintaining a noise level of 18dBA minimum. It is certified with the 80 PLUS Bronze standard, ensuring energy efficiency. The unit conforms to the ATX form factor with dimensions of 150 mm (W) x 86 mm (H) x 140 mm (D) and weighs 1.49 kg. Connector options include: • V1.1: 1 x 24/20-Pin motherboard connector, 1 x 8/4-Pin EPS/ATX 12V connector, 2 x 8/6-Pin PCIE connectors, 6 x SATA connectors, 3 x 4-Pin Peripheral connectors, and 1 x 4-Pin Floppy connector. • V1.2: 1 x 24/20-Pin motherboard connector, 1 x 8-Pin EPS and 1 x 4-Pin + 4-Pin ATX 12V connector, 2 x 8/6-Pin PCIE connectors, 6 x SATA connectors, 3 x 4-Pin Peripheral connectors, and 1 x 4-Pin Floppy connector. The SST-ET550-B is designed to support dual (CPU) EPS connectors in production batches with serial numbers starting from 2027 or later. Specifications may vary slightly from those printed on retail boxes or manuals.