Brand Chongqing Branch / YK Model SA-500-27 type AC / DC power supply modulation pulse width modulation (PWM) type transistor input voltage half-bridge connection 110V / 220V (V) Output power 486 (W) Output voltage 18 (V ) Operating efficiency 80 (%) Output Current 27A (A) 18v / 27A switching power supply 18VDC output access centralized power 110V / 220V switchable input Model: SA-500-18 Brand: Chongqing Branch / YK Power: 500W Input voltage: 110V, 220V AC output voltage: 18V DC output current: 27A built-in cooling fan warranty for one year