What does Back panel mean?

Back panel meaning in Computer Science Dictionary

the rear panel may be the percentage of the motherboard that allows you to link external devices including your monitor, speakers, keyboard, and mouse. As well as be seen in photo below, the back panel is regarding the side of the motherboard. Whenever installing the motherboard this region of the motherboard would-be in the back side of the case and are inserted in to the situations I/O plate.