SeaSonic SS-300SFD 300W SFX12V v3.1 80 PLUS Certified Active PFC Power Supply Fans: 8cm Double Ball Bearing Main Connector: 24Pin +12V Rails: 2 Hold-up Time: 16ms min. Efficiency: > 80% Over Voltage Protection: Yes Input Voltage: 100 - 240 V Input Frequency Range: 50/60 Hz