The AC and DC power supplies support two ranges of voltages: low line (90V, 110/120V,
132V) and high line (180V, 200/240V, 305V). Depending on the input voltage, the power
supply will support 1800W (for low line) and 3600W (for high line). The input voltage
range determines the number of power supplies needed for the chassis. A chassis with low
line input voltage requires a minimum of eight power supplies while a chassis with high
line input voltage requires a minimum of four power supplies.