A filter for a power supply, the filter comprising: at least two inputs, each input including a pair of input terminals; at least two outputs, each output including a pair of output terminals; a pair of X-capacitors including a first X-capacitor and a second X-capacitor, each X-capacitor having a first terminal and a second terminal, the first terminal of the first X-capacitor coupled between one input terminal of the pair of input terminals of one of the at least two inputs and one output terminal of the pair of output terminals of one of the at least two outputs, the second terminal of the first X-capacitor coupled between one input terminal of the pair of input terminals of another one of the at least two inputs and one output terminal of the pair of output terminals of another one of the at least two outputs, the first terminal of the second X-capacitor coupled between another input terminal of the pair of input terminals of said one of the at least two inputs and another output terminal of the pair of output terminals of said one of the at least two outputs, the second terminal of the second X-capacitor coupled between another input terminal of the pair of input terminals of said another one of the at least two inputs and another output terminal of the pair of output terminals of said another one of the at least two outputs; and a common mode choke coupled between the at least two inputs and the at least two outputs, the common mode choke including a magnetic core and at least four windings extending about the magnetic core, each winding coupled between a different one of the input terminals and a different one of the output terminals than the other windings of the common mode choke. at least two inputs, each input including a pair of input terminals; at least two outputs, each output including a pair of output terminals; a pair of X-capacitors including a first X-capacitor and a second X-capacitor, each X-capacitor having a first terminal and a second terminal, the first terminal of the first X-capacitor coupled between one input terminal of the pair of input terminals of one of the at least two inputs and one output terminal of the pair of output terminals of one of the at least two outputs, the second terminal of the first X-capacitor coupled between one input terminal of the pair of input terminals of another one of the at least two inputs and one output terminal of the pair of output terminals of another one of the at least two outputs, the first terminal of the second X-capacitor coupled between another input terminal of the pair of input terminals of said one of the at least two inputs and another output terminal of the pair of output terminals of said one of the at least two outputs, the second terminal of the second X-capacitor coupled between another input terminal of the pair of input terminals of said another one of the at least two inputs and another output terminal of the pair of output terminals of said another one of the at least two outputs; and a common mode choke coupled between the at least two inputs and the at least two outputs, the common mode choke including a magnetic core and at least four windings extending about the magnetic core, each winding coupled between a different one of the input terminals and a different one of the output terminals than the other windings of the common mode choke.