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Open Box: Images shown are from the NEW version of this item and are for reference only. The actual Open Box product may differ in packaging and included accessories, but has been tested to ensure basic functionality.
550W continuous power output at 50? operating temperature rated for 24/7 operation
High efficiency with 80 PLUS Gold certification
Class-leading single +12V rail with 45A
Silent running 80mm fan with 18dBA minimum
Support dual PCI-E 8/6 pin connectors
As the standards bearer of SFX PSUs, SilverStone’s continuous breakthrough in power supply miniaturization and power density has resulted in SX550, a standard sized SFX model with high performance but surprisingly affordable price. It has 80 PLUS Gold level of efficiency, 50? temperature rating, and reliability of a continuous 550W output for 24/7 operation. Furthermore, the SX550 has a flexible single +12V rail with 45A to support dual 8pin/6pin PCI-E connectors for multi-GPU systems. Equipped with automatic temperature control, its 80mm fan can remain silent during idle and provide adequate cooling during high loading conditions. For SFF enthusiasts looking for the best bang for their bucks, the SX550 is an excellent choice.
Designed for 80 PLUS Gold level of efficiency to reduce wasted heat and save on electricity.
Built-in 80mm fan has excellent airflow and low noise, perfect for quiet home or office use.
1 x 24 / 20-Pin motherboard connector
1 x 8 / 4-Pin EPS / ATX 12V connector
2 x 8 / 6-Pin PCIE connector
3 x SATA connector
2 x 4-Pin Peripheral connector
1 x 4-Pin Floppy connector
Max. DC Output
693W per liter
combined +3.3, +5V
90V ~ 264V
Input Frequency Range
47Hz ~ 63Hz
Active PFC(PF>0.9 at Full Load)
87% ~ 90% at 10% ~ 100% loading
0°C ~ 50°C
Over Current Protection
Over Power Protection
Over Voltage Protection
Short Circuit Protection
Over Temperature Protection
1 x 24 / 20-Pin motherboard connector(300mm)
1 x 8 / 4-Pin EPS / ATX 12V connector(400mm)
2 x 8 / 6-Pin PCIE connector("400mm / 150mm" x 2)
3 x SATA connector(300mm / 200mm / 100mm)
2 x 4-Pin Peripheral connector(300mm / 200mm)
1 x 4-Pin Floppy connector(300mm / 200mm / 200mm)
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