A sled insertable into a server device, the server device being configured to receive the sled, wherein the server device comprises: a backplane, comprising a left backplane connector and a right backplane connector; a control module, connected to the backplane; a fan module, connected to the control module, for dissipating heat generated by a plurality of electronic unit modules stored on the sled; and a power supply module, connected to the control module, for powering the plurality of electronic unit modules, the power supply module being disposed in a center region of a front end of the server device; and wherein the sled comprises: a housing comprising a front portion and a rear portion connected by a base portion, the base portion comprising a plurality of electronic unit modules; and a slidable structure housing a connector, wherein the slidable structure is laterally slidable with respect to the front portion of the housing, wherein the slidable structure is configured to slide horizontally once the sled is inserted into the server device and wherein the slidable structure is spring loaded to remain centered with respect to the sled via two spring loaded mechanisms which are respectively disposed at two opposite sides of the slidable structure, wherein the slidable structure of the sled includes a plurality of slots configured to receive either: a plurality of guide pins (305, 315) located on a left side of the server device as the sled is being inserted into a left half of the server device, to laterally shift the connector on the left and align with a left backplane connector of the backplane; or a plurality of guide pins (305, 315) located on a right side of the server device as the sled is being inserted into a right half of the server device, to laterally shift the connector on the right and align with the right backplane connector of the backplane. a backplane, comprising a left backplane connector and a right backplane connector; a control module, connected to the backplane; a fan module, connected to the control module, for dissipating heat generated by a plurality of electronic unit modules stored on the sled; and a power supply module, connected to the control module, for powering the plurality of electronic unit modules, the power supply module being disposed in a center region of a front end of the server device; and wherein the sled comprises: a housing comprising a front portion and a rear portion connected by a base portion, the base portion comprising a plurality of electronic unit modules; and a slidable structure housing a connector, wherein the slidable structure is laterally slidable with respect to the front portion of the housing, wherein the slidable structure is configured to slide horizontally once the sled is inserted into the server device and wherein the slidable structure is spring loaded to remain centered with respect to the sled via two spring loaded mechanisms which are respectively disposed at two opposite sides of the slidable structure, wherein the slidable structure of the sled includes a plurality of slots configured to receive either: a housing comprising a front portion and a rear portion connected by a base portion, the base portion comprising a plurality of electronic unit modules; and a slidable structure housing a connector, wherein the slidable structure is laterally slidable with respect to the front portion of the housing, wherein the slidable structure is configured to slide horizontally once the sled is inserted into the server device and wherein the slidable structure is spring loaded to remain centered with respect to the sled via two spring loaded mechanisms which are respectively disposed at two opposite sides of the slidable structure, wherein the slidable structure of the sled includes a plurality of slots configured to receive either: a plurality of guide pins (305, 315) located on a left side of the server device as the sled is being inserted into a left half of the server device, to laterally shift the connector on the left and align with a left backplane connector of the backplane; or a plurality of guide pins (305, 315) located on a right side of the server device as the sled is being inserted into a right half of the server device, to laterally shift the connector on the right and align with the right backplane connector of the backplane.