A data storage device carrier system includes a carrier configured to support one or more data storage devices, a backplane, including one or more coupling connector devices configured to electrically couple with a motherboard, and an interposer board operable to couple a plurality of the data storage devices supported by the carrier with the backplane. In an embodiment, the one or more coupling connector devices are operable to transfer communication signals and electrical power. The interposer board is operable to provide the electrical power from a single port on the backplane to each of the plurality of the data storage devices. The interposer board is also operable to pass communication signals between a primary port on the backplane to a first one of the plurality of the data storage devices, and to pass communication signals between a secondary port on the backplane to a second one of the plurality of the data storage devices.