As a step-up from the venerable ST30NF, SilverStone’s first fan-less power supply, the newer Nightjar series ST40NF achieves its continuous power output up to 400W. This is the power level that has become the mainstream application for a new generation of silent computers. By again combining superior server-level components and advanced technical design, the ST40NF has high reliability and efficiency. It can maintain 82%~86% efficiency at 20%~100% loading, earning it 80 PLUS Bronze certification. Coupled with single PCI-E 8 pin connector and dual PCI-E 6pin connectors, the ST40NF can also support high-end graphics cards if needed. For silent enthusiasts or audio/video professionals, getting this power supply will certainly be one of the most important upgrade in completing a truly silent computing environment

• Fan-less thermal solution, 0 dBA acoustics.
• Efficiency 82%~86% at 20%~100% loading with 80 PLUS Bronze certification
• 400W continuous power output
• Strict ±3% voltage regulation
• Single PCI-E 8pin and dual PCI-E 6pin support High-end GPU
• Aluminum construction
• Server-level components
• Support ATX 12V 2.3 & EPS 12V
• Active PFC

Model No.:	SST-ST40NF
Max. DC Output:	400W
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:	3.0 kg
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:	20A / n/a / 0A / ±3% / ±1% / 50mV
+5 V:	14A / n/a / 0A / ±3% / ±1% / 50mV
+12 V:	27A / 36A / 0.5A / ±3% / ±1% / 120mV
-12 V:	0.5A / n/a / 0.1A / ±10% / ±1% / 120mV
+5 VSB:	2.5A / 3.5 / 0A / ±5% / ±1% / 50mV
Peak Wattage:	400 Watts
combined +3.3, +5V:	130W
combined +12V:	327W
Input Voltage:	99 ~ 264 V AC
Input Frequency Range:	47Hz ~ 63Hz
PFC:	Active PFC
Efficiency:	over 82%~86% (20% to 100% loading)
Operating Temperature:	0 ~ 40°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 6-Pin PCIE connector.（500mm / 150mm） 1 x 8 / 6-Pin PCIE connector.（500mm） 6 x SATA connector.（500mm / 150mm / 150mm） 6 x 4-Pin Peripheral connector.（500mm / 250mm / 150mm） 2 x 4-Pin Floppy connector.（500mm / 250mm / 150mm / 150mm）