In a PC the process of power delivery starts with the AC adapter and DC jack interconnect. The adapter is
plugged into a DC jack to supply power to the PC. A DC jack typically includes a center barrel made of plastic,
which helps separate the power and ground contacts to help to prevent a short from occurring. Figure 1 and 2 show
the normal state of the DC jack and the risk condition of exposed pins when the center barrel is damaged. The
center barrel and other internal plastic components of a DC jack plays a pivotal role in ensuring safety of a PC unit
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INC, HP, "BREAKAWAY AC/DC ADAPTER", Technical Disclosure Commons, (March 14, 2019)