A server including: a base circuit board having a first surface and a second surface opposite to said first surface ; a plurality of spaced-apart first connectors that are disposed on said first surface of said base circuit board , that are arranged in a single row, and that are electrically connected to said base circuit board ; a plurality of spaced-apart second connectors that are disposed on said second surface of said base circuit board in pairs, a projection of each pair of said second connectors on said base circuit board being located between projections of adjacent two of said first connectors on said base circuit board , said second connectors being electrically connected to said base circuit board ; a plurality of storage modules , each of which is electrically connected to a corresponding one of said first connectors ; and a plurality of controllers , each of which is electrically connected to a corresponding one of said second connectors and is operable to control a corresponding one of said storage modules , characterized in that at least one pair of said second connectors is electrically connected to said adjacent two of said first connectors and another two of said first connectors through said base circuit board in such a manner that wires that are used to interconnect one of said at least one pair of said second connectors and said adjacent two of said first connectors and said another two of said first connectors , and wires that are used to interconnect the other one of said at least one pair of said second connectors and said adjacent two of said first connectors and said another two of said first connectors are separated from each other. a base circuit board having a first surface and a second surface opposite to said first surface ; a plurality of spaced-apart first connectors that are disposed on said first surface of said base circuit board , that are arranged in a single row, and that are electrically connected to said base circuit board ; a plurality of spaced-apart second connectors that are disposed on said second surface of said base circuit board in pairs, a projection of each pair of said second connectors on said base circuit board being located between projections of adjacent two of said first connectors on said base circuit board , said second connectors being electrically connected to said base circuit board ; a plurality of storage modules , each of which is electrically connected to a corresponding one of said first connectors ; and a plurality of controllers , each of which is electrically connected to a corresponding one of said second connectors and is operable to control a corresponding one of said storage modules , characterized in that at least one pair of said second connectors is electrically connected to said adjacent two of said first connectors and another two of said first connectors through said base circuit board in such a manner that wires that are used to interconnect one of said at least one pair of said second connectors and said adjacent two of said first connectors and said another two of said first connectors , and wires that are used to interconnect the other one of said at least one pair of said second connectors and said adjacent two of said first connectors and said another two of said first connectors are separated from each other. <EOS>