A self-locking portable power distributor for breadboards has a power input, and a power output with two conductive lines, configured for supplying voltage and ground to at least one breadboard. The distributor includes at least one three-dimensional connection element located on a distributor first outer surface such that the distributor three-dimensional connection element is shaped and dimensioned to be compatible with at least one three-dimensional connection element of the breadboard. The breadboard three-dimensional connection element may be located on a breadboard first outer surface disposed substantially perpendicular to a breadboard second outer surface. The second outer surface of the breadboard may carry at least one electronic component terminal socket. The distributor three-dimensional connection element may be configured for engaging with the breadboard three-dimensional connection element for allowing side-to-side connection of the distributor to the breadboard with respect to the at least one electronic component terminal socket.

A shock absorber for a printed circuit board (PCB) includes a first portion and a second portion. The first portion is positioned on a first side of the PCB at or near a connector that extends from the PCB. The second portion is positioned on a second side of the PCB, opposite the first portion. The first and second portions prevent the PCB from moving when the PCB is coupled to a host device. As the PCB is subjected to various movements, strains and stresses, the shock absorber prevents the PCB from cracking or breaking, especially at or near the connector, which is susceptible to cracking and breaking.