Patent ID: 7995336

Claim:
A rear board for a blade server that comprises a front board and the rear board coupled to the front board, the rear board comprising: a non-rectangular circuit board having an upper portion, a lower portion positioned laterally adjacent to the upper portion, a back end, the back end facing the front board, and a stepped front end, the stepped front end extending away from the back end and having an upper front end and a lower front end, wherein the lower portion has a first width from the back end to the lower front end and the upper portion has a second width from the back end to the upper front end, the first width being larger than the second width; and a connector configured to connect at least two hard disks arranged side by side to each other, the connector being set on the lower portion of the rear board; wherein the lower front end of the rear board extends beyond the upper front end by a distance equal to the difference between the first width and the second width along a width from the back end of the rear board so as to accommodate the at least two hard disks when the at least two hard disks are connected to the connector and are located directly on the lower portion and extend beyond a line located a distance of the second width from the back end.