Mechanical system for enabling scalable server system

A scalable system for a high-performance computer, comprising:

• a plurality of inner chassis inserted in a computer rack mounting kit;
• each inner chassis having front and rear longitudinal ends, being open at these ends, and being configured to receive at least one motherboard module comprising motherboard connectors, said at least one motherboard module being inserted by a first longitudinal end of each inner chassis;
• said plurality of inner chassis forming a stack of inner chassis, the stack of inner chassis being configured to receive an outer floating bracket chassis, said outer floating bracket chassis being inserted by a second longitudinal end of each inner chassis forming the stack of inner chassis;
• said outer floating bracket chassis housing a cable box, configured for connecting to each other the motherboard connectors of a plurality of motherboard modules arranged in the stack of inner chassis, and at least one double floating bracket that houses cable connectors of cables of said cable box;
• wherein each double floating bracket comprises floating attachment means comprising:
• a first floating attachment means configured to guide each double floating bracket in the outer floating bracket chassis by aligning upward and downward each double floating bracket with an inner chassis;
• and
• a second floating attachment means configured to align the cable connectors of the cables of said cable box with motherboard connectors of each of the plurality of motherboard modules.