A second modular mount rack frame for storing devices is described herein. One mount rack frame can comprise two modular rigid support structures in which bolts reversibly insert to laterally increase or decrease the horizontal dimension available for a computer related device. Rigid modular support structures stack, align vertically, and mechanically attach to each other to increase storage in a vertical dimension. A second modular mount rack frame can also exhibit wheels or coasters so the entire frame can smoothly and easily move across a flat supporting surface.