An electrostatic discharge guide comprises a ground wire isolated from a data line. The refrigerated server rack may contain a cooling unit or include a cooling inlet to receive chilled air to cool the computing equipment within the server rack. A first-side support member is located between the damper member and the cover member and is engaged with a first-side outer peripheral portion of the first-side diaphragm and the cover member. ruthenium oxide regions, at grain boundaries of a metal layer, e.