Thermal management devices and systems, and corresponding methods of cooling computing devices are described herein. Such devices, systems, and methods may be advantageous in providing optimal thermal management for the computing device and/or minimizing acoustics in the computing device for a plurality of rotational fan speeds. Additionally, optimal thermal management may provide an increase in system performance and an increase in computing device life expectancy. In one example, a thermal management system includes a fan configured to move air through an outlet opening of the fan and at least one airflow guide positioned adjacent to the outlet opening. The at least one airflow guide is configured to direct movement of the air from the outlet opening to dissipate heat within an electronic device, and the at least one airflow guide is configured to pivot about an axis to move between a first position to a second position based on a change in a rotational speed of the fan.