What object is placed between the system case and the motherboard I/O ports?

The faceplate, also known as a I/O shield or backplate, is an essential component that is installed between the system case and the motherboard I/O ports. Its primary function is to provide a clean and secure interface for external ports on the back of the computer case, such as USB ports, audio jacks, and Ethernet connections. The faceplate is designed to match the layout of the motherboard’s I/O ports, ensuring that these ports are accessible and properly aligned with the openings in the case.

In addition to serving as a physical barrier, the faceplate helps protect the internal components from dust and debris, while also improving the overall appearance of the system. It also aids in grounding the motherboard, which can be crucial for preventing electrical interference and contributing to the stability of the PC.

Every motherboard comes with a specific I/O shield compatible with its layout, which should be installed before the motherboard is secured to the case, ensuring that all ports are unobstructed and aligned properly.