Which of the following cables are secured to the inside of the top cover of a laptop with an adhesive backing?

The correct answer pertains to the ThinkPad logo LED, which is an example of a cable that is secured to the inside of a laptop's top cover using adhesive backing. This design helps to create a clean and streamlined appearance by ensuring that the cable does not interfere with other components and remains securely in place during handling.

In contrast, the other options typically do not utilize adhesive backing for securing. The power supply cable, display cable, and hard drive connector are usually connected through different mechanisms such as connectors or clips. These components require secure connections to facilitate functionality and ease of replacement, which means they are generally designed to be plugged in or snapped into place rather than adhered directly to surfaces. Understanding the specific applications for adhesive backing in cable management helps in recognizing the design and assembly choices made in laptop manufacturing.