Global Connector Technology (GCT) DC Power Jacks are PCB-mounted cylindrical connectors with a central metal pin. GCT DC Power Jacks come in a variety of sizes to suit a range of power ratings and offer vertical and horizontal orientations as well as thru hole and SMT mounting styles. These connectors are normally used in an input/output function on handheld equipment. They are mounted on a PCB and through a panel cut out to allow connection to a power supply.