Examples described herein relate to an apparatus that includes a flexible conductor covered in an insulative material and at least one conductor region in contact with the flexible conductor. In some examples, melting of the at least one conductor region is to cause a conductive coupling of the flexible conductor with a second conductor and wherein the flexible conductor is adapted to conductively couple a first circuit board oriented orthogonal to a second circuit board. In some examples, the at least one conductor region comprises at least one solder ball of a grid array. In some examples, the at least one conductor region is re-solderable.