The video shows a man's hands as he assembles a computer tower. He is seen placing the side panel of the tower on the table, followed by the motherboard. He then proceeds to attach the cooling fan to the tower, followed by the power supply unit. The man carefully aligns each component and secures them in place, ensuring that everything is properly connected and the tower is stable. The video provides a step-by-step guide to building a computer tower, with the man's hands demonstrating each step clearly and methodically.