What component ensures proper cooling and airflow when components are removed from a server?

The component that ensures proper cooling and airflow when components are removed from a server is baffles. Baffles are physical barriers or frameworks within the server chassis that direct airflow effectively across the components. When hardware, such as a cooling fan or other components, is removed, baffles help maintain the intended airflow patterns, reducing hotspots and preventing thermal overload, which could affect system performance and longevity.

By managing the direction and flow of air through the system, baffles play a crucial role in sustaining cooling efficiency even with changes in the hardware layout. This helps to ensure that air continues to circulate properly, which is vital in maintaining the operational integrity of the remaining components.

In contrast, a heatsink is designed to dissipate heat from specific components, such as CPUs or GPUs, but it does not control airflow as effectively as baffles do across the entire server when configuring or removing hardware. Voltage regulators are responsible for maintaining voltage within a specified range and do not contribute to cooling or airflow management. Liquid cooling systems provide efficient cooling but are not specifically related to maintaining airflow when components are removed from the server. Thus, baffles are the correct choice for ensuring proper cooling and airflow during such scenarios.