A load balancing method and incorporated assembly is provided for a computer frame having side walls. The assembly comprises a mid-plane plate having top and bottom sides and capable of being secured to the frames inside side walls. The mid-plane plate also has means both on its top and bottom sides for securing a number of electronic books in such a manner that they can be stacked on top of or adjacent to one another. A locking mechanism can also be provided as part of the assembly or alone to further secure the electronic books to the frame.