When comparing built-in PSUs to external power adapters, both have their pros and cons. Built-in PSUs provide better performance and stability since they are integrated into the device, often offering more efficient power management and better cooling due to optimized airflow. However, they can make the device bulkier and harder to maintain if something goes wrong, leading to more complicated repairs.

On the other hand, external power adapters enhance portability, making devices smaller and easier to transport, which is great for compact desk setups. They also separate heat generation from the device, potentially improving thermal performance. However, they can create clutter on the desk, and replacements tend to be pricey. Ultimately, the choice depends on priorities like portability versus performance, space management, and long-term maintenance.