A single component sag-free liquid ebonite composition having silane coupling agents selected to chemically bond and convert liquid unsaturated rubber to alkoxy functionality, to consume and scavenge moisture originally present in the mixture, and to react with sulfur during vulcanization. This method includes the steps of detecting a printing position of a solder paste on the circuit board and mounting an electronic component. The diagnostic port can further include a system interface coupled to the USB slave device and operable to interface to an integrated controller independently of an operating system.