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A blend of performance and quality, the Sonic SS-300SFD SFX power supply is a great choice for ultra-compact PCs or other small form factor systems. High in efficiency and low in ripple, this unit is 80 PLUS certified for better usage of every watt of input AC power. Robust power output means your rig can run stably and reliably, while superb protection circuits help avoid device damage. One quiet fan provides great air flow so your PSU stays cool, even at demanding load levels.