A system includes a probe connector including first traces coupled to first conductors curvilinearly arranged around a first elongated portion of the probe connector. The system further includes a circuit board including second traces coupled to first connector pads curvilinearly arranged around a first hole in the circuit board. The first connector pads are to couple to the first conductors of the probe connector when the first elongated portion is inserted in the first hole. The system further comprises a first integrated circuit disposed on the circuit board, the first integrated circuit being coupled to the second traces.