Right. The panel to his power core.

"I trust you," he said with a faint smile, starting to open the panel before he paused when Dead End mentioned another way. The therapist peered up at him again. "What other way do you mean? Not that I mind doing it this way," Rung said in a bit of a reassuring way, honestly just curious about what this other method was.

Maybe said other way would make it so there wasn't so much physical evidence of what had occurred? It'd be easier to hide it from others that way.