The video shows a close-up of a circuit board with several components. The camera focuses on a square-shaped component with a metal base and a white top. The component appears to be a heat sink. The camera then zooms in on the component, revealing a label with the numbers "14-400-AT." A hand enters the frame and points to the component, indicating its importance. The camera then zooms out, showing the component in relation to the rest of the circuit board.