A computing system for housing a number of storage devices includes a number of device cages, and a backplane coupled to each of the device cages to electrically couple a number of the storage devices to the computing system. The backplane includes a number of device combination signal and power interfaces located on a first side of the backplane to couple a number of the storage devices to the backplane. The backplane further includes a number of combination signal and power interfaces located on a second side of the backplane to couple the backplane to the computing system. The backplane further includes a number of signal connectors to couple the backplane to the computing system.