Twins PRO 500W FSP500-50RAB Features: ATX PS2 redundant size Efficiency ≧ 90% at typical load Quiet and long-lasting 40mm ball bearing fan Ribbon cables for th need of enthusiasts Powerful single +12V rail design All Japanese electrolytic capacitors Intel Latest CPU ready Full protections OCP, OVP, SCP, OPP, OTP, FFP, UVP Specifications: Model FSP500-50RAB Rated Output Power 500W Form Factor PS2 ATX Redundant 80 PLUS Certification GOLD Input Voltage 100-240 Vac Input Current 8-4 A Input Frequency 60-50 Hz PFC Active PFC Efficiency 90% Fan Type Dual ball bearing fan, 40mm Dimensions(L x W x H) 150 x 86 x 190mm Protection OCP, OVP, SCP, OPP, OTP, FFP, UVP AC Input 100-240Vac~ 8-4A 50-60Hz DC Output / Max Output Current +3.3V / 20A +5V / 20A +12V / 41.76A -12V / 0.5A +5Vsb / 3A