A printed circuit board that enables electrical communication between a fuel cell stack and measuring electronics includes a substrate having first and second sides and a plurality of pad sets formed in the substrate. A sidetracking system includes a whipstock assembly and a stinger assembly. The memory system further includes a bus connected to the chipset and the first and second memory module connectors so to create a branch point. At least one secondary flex connector may electrically connect the primary flex connector to the auxiliary input device or the display. In measurement of a viscoelasticity of resin A, the loss elastic modulus at TpA\u221210 is at least 1\xd7107 Pa but not more than 1\xd7108 Pa. In one method, the surface of a substrate having a contaminating particulate disposed thereon is cleaned by directing a laser towards the substrate, generating a temperature increase in the substrate and transferring thermal energy from the substrate to the particulate to decompose the particulate.