1008W AC/DC ENCLOSED SWITCHING POWER SUPPLY 48Volts @ 21Amps Specifications: Size (L x W x H) (inches): 11.6 x 5.0 x 1.6 ; Ripple and Noise (mV p-p): 150 ; Load Regulation: 0.5%; Line Regulation: 0.5%; Input: 90-264VAC @ 47-63Hz; Built-in active Power Factor Correction function ; Built-in ON-OFF control and remote sense function ; Parallel function ; Universal AC input; 5-year warranty; Certifications: UL/CUL/TUV/CE/CB/PFC;