In the video, a person is seen installing a power supply unit into a computer case. The power supply unit is black and has a fan on the front. The person carefully places the unit into the case, ensuring that it fits properly. The computer case is black and has several other components already installed, including a motherboard and RAM. The person's hands are visible as they work on the installation, and they appear to be experienced in handling computer hardware. The video provides a clear view of the installation process, and the person's actions are deliberate and precise. Overall, the video is a helpful guide for anyone looking to install a power supply unit into a computer case.