Final answer:
The motherboard is the component responsible for managing data flow between a computer's system and attached devices, serving as the central hub for all communications.
Step-by-step explanation:
The component responsible for managing data flow between your computer's system and any attached devices, such as hard drives, keyboards, video adapters, printers, or mice, is the motherboard. The motherboard serves as the main hub for communication between all of the computer's components and is connected to the central processing unit (CPU), memory (RAM), and all other hardware devices. It hosts the chipset that controls the data flow and the expansion slots for peripherals.