A/C Input Voltage: 90 TO 132 VAC OR 180 TO 264 VAC (select by switch) A/C Input Freqneucy: 50/60Hz A/C Input current: 6A RMS MAX. FOR 115 VAC 3A RMS MAX. FOR 230 VAC Max surfing current : 50A FOR 115 VAC cold boot 100A FOR 230 VAC cold boot Variation rate: í+1% Load variation vate: í+5% (ONLY -5V, ¿C12Ví+10%) Min loading : +5V/2.0A +12V/1.0A Ripple : +3.3V/80mV +5V/80mV +12V/150mV -5V/200mV -12V/240mV +5VSB/80mV Efficiency:70% MINIMUM AT FULL LOAD Operation temperature: 0íµ~+50íµ CENTIGRADE Storate temperature: -40íµ~+85íµ CENTIGRADE Storate humidity : 10%~90% Mean non-malfunctional operaton duration: 20K HOURS MINIMUM AT 25íµAMBIENT Micro ATX power supply 250w, front exhaust fan at front / rear inspire fan at rear (all wires & plugs are included).