Device, system, and method of flexible hardware connectivity

A system for Printed Circuit Board (PCB) units, the system comprising:

• a rack capable of storing a set of PCB units, the rack comprising:
• a set of cavities to store the set of PCB units, and one or more PCB unit insertion mechanisms;
• wherein each PCB unit comprises:
• a rigid platform having embedded therein at least one programmable logic device;
• at least one rigid panel having embedded therein a set of connectors;
• and
• a flexible connection to flexibly connect, at a non-straight angel, the programmable logic device to the rigid panel along a folding axis of the rigid panel and the rigid platform,
• wherein a density of wires of the flexible connection is greater than a density of wires entering at least one of the connectors.