The fanless Nightjar series power supplies are long favorites for professionals and enthusiasts alike that require noiseless power solution with no moving parts. With increasing power demands required from modern computers, SilverStone engineers have once again created another fanless power supply with leading output level in the ST50NF. With 500W of continuous rating, near 80 PLUS Silver efficiency, ±3% voltage regulation, single +12V rail, multiple PCI-E connectors, and full host of safety features, the ST50NF is a great choice for mission-critical systems that need to operate in noiseless or dusty environments.

• Fan-less thermal solution, 0 dBA acoustics
• Efficiency 84%~88% at 20%~100% loading
• 500W continuous power output
• Strict ±3% voltage regulation
• PCI-E 8pin and PCI-E 6pin connector support
• Powerful class-leading single +12V rail
• Aluminum construction
• Server-level components
• Support ATX 12V 2.3 & EPS 12V

Model No.:	SST-ST50NF
Max. DC Output:	500W
Color:	Silver
Cooling System:	Fan-less thermal solution
Noise Level:	0 dBA
Dimensions:	150 mm (W) x 86 mm (H) x 160 mm (D)
Weight:	3.5 kg
Certification:	80 PLUS Silver (minimum 80 PLUS Bronze guaranteed)
Max DC Output & Load Range for 400W at 110 ~ 180 V AC
Voltage:	Max. / Peak / Min. / Range / Line Reg. / Ripple (mVp-p)
+3.3 V:	18A / n/a / 0.5A / ±3% / ±1% / 50mV
+5 V:	18A / n/a / 0.5A / ±3% / ±1% / 50mV
+12 V:	38A / 36A / 0.1A / ±3% / ±1% / 120mV
-12 V:	0.5A / n/a / 0.1A / ±10% / ±1% / 120mV
+5 VSB:	2.5A / 3.5 / 0.1A / ±5% / ±1% / 50mV
Peak Wattage:	500 Watts
combined +3.3, +5V:	120W
combined +12V:	456W
Input Voltage:	99 ~ 264 V AC
Input Frequency Range:	47Hz ~ 63Hz
PFC:	Active PFC
Efficiency:	over 84%~88% (20% to 100% loading)
Operating Temperature:	0 ~ 45°C
Protection:	Over Current Protection Over Power Protection Over Voltage Protection Short Circuit Protection
Connectors:	1 x 24 / 20-Pin Motherboard connector （550mm） 1 x 8 / 4-Pin EPS / ATX 12V connector （550mm） 1 x 8/6-Pin PCIE connector （550mm） 1 x 6-Pin PCIE connector （550mm / 150mm） 6 x SATA connector （500mm / 150mm / 150mm） 6 x 4-Pin Peripheral connector （500mm / 150mm / 150mm） 2 x 4-Pin Floppy connector （500mm / 150mm / 150mm / 150mm）