An apparatus comprising: a first plurality of switch bars wherein each of the first plurality of switch bars are in the shape of a rectangular prism and comprise a first switch type, the first plurality of switch bars being arranged parallel to one another with space between each of the first plurality of switch bars wherein a first side of each of the first plurality of switch bars comprises a first plurality of connectors and a second side of each of the first plurality of switch bars comprises a second plurality of connectors, the first side of each of the first plurality of switch bars being opposite the second side of each of the first plurality of switch bars; a second plurality of switch bars wherein each of the second plurality of switch bars are in the shape of a rectangular prism and comprise a second switch type, the second plurality of switch bars being arranged parallel to one another with space between each of the second plurality of switch bars wherein a first side of each of the second plurality of switch bars comprises a third plurality of connectors and a second side of each of the second plurality of switch bars comprises a fourth plurality of connectors, the first side of each of the second plurality of switch bars being adjacent the second side of each of the first plurality of switch bars, the second plurality of switch bars being perpendicular to the first plurality of switch bars wherein ones of the second plurality of connectors are adjacent to and aligned with respective and corresponding ones of the third plurality of connectors; and a third plurality of switch bars wherein each of the third plurality of switch bars are in the shape of a rectangular prism and comprise a third switch type, the third plurality of switch bars being arranged parallel to one another and being disposed in space between the first plurality of switch bars and the second plurality of switch bars, wherein a first side of each of the third plurality of switch bars comprises a fifth plurality of connectors and a second side of each of the third plurality of switch bars comprises a sixth plurality of connectors, the first side of each of the third plurality of switch bars being opposite the second side of each of the third plurality of switch bars wherein ones of the fourth plurality of connectors are adjacent to and aligned with respective and corresponding ones of the fifth plurality of connectors and the sixth plurality of connectors, the third plurality of switch bars being perpendicular to the first plurality of switch bars and to the second plurality of switch bars. a first plurality of switch bars wherein each of the first plurality of switch bars are in the shape of a rectangular prism and comprise a first switch type, the first plurality of switch bars being arranged parallel to one another with space between each of the first plurality of switch bars wherein a first side of each of the first plurality of switch bars comprises a first plurality of connectors and a second side of each of the first plurality of switch bars comprises a second plurality of connectors, the first side of each of the first plurality of switch bars being opposite the second side of each of the first plurality of switch bars; a second plurality of switch bars wherein each of the second plurality of switch bars are in the shape of a rectangular prism and comprise a second switch type, the second plurality of switch bars being arranged parallel to one another with space between each of the second plurality of switch bars wherein a first side of each of the second plurality of switch bars comprises a third plurality of connectors and a second side of each of the second plurality of switch bars comprises a fourth plurality of connectors, the first side of each of the second plurality of switch bars being adjacent the second side of each of the first plurality of switch bars, the second plurality of switch bars being perpendicular to the first plurality of switch bars wherein ones of the second plurality of connectors are adjacent to and aligned with respective and corresponding ones of the third plurality of connectors; and a third plurality of switch bars wherein each of the third plurality of switch bars are in the shape of a rectangular prism and comprise a third switch type, the third plurality of switch bars being arranged parallel to one another and being disposed in space between the first plurality of switch bars and the second plurality of switch bars, wherein a first side of each of the third plurality of switch bars comprises a fifth plurality of connectors and a second side of each of the third plurality of switch bars comprises a sixth plurality of connectors, the first side of each of the third plurality of switch bars being opposite the second side of each of the third plurality of switch bars wherein ones of the fourth plurality of connectors are adjacent to and aligned with respective and corresponding ones of the fifth plurality of connectors and the sixth plurality of connectors, the third plurality of switch bars being perpendicular to the first plurality of switch bars and to the second plurality of switch bars.