A computer system includes a plurality of blade servers, a midplane, a supplemental midplane, and a peripheral device separate from the blade servers. The midplane includes a plurality of connectors connecting the midplane to the plurality of blade servers. The supplemental midplane is separate from the midplane and includes a body, a plurality of connectors, and a peripheral connector. The plurality of connectors are attached to the body and connect the supplemental midplane to the plurality of blade servers. The peripheral connector is attached to the body and connects the supplemental midplane to the peripheral device. The plurality of connectors of the supplemental midplane communicate with the peripheral connector of the supplemental midplane. The plurality of connectors of the supplemental midplane are configured to be removably connectable to the midplane.