A physical package is removable if it is designed to be taken in and out of the physical container in which it is normally ...

A physical package is removable if it is designed to be taken in and out of the physical container in which it is normally found, without impairing the function of the overall packaging. A package can still be removable if power must be 'off' in order to perform the removal. If power can be 'on' and the package removed, then the element is removable and can be hot swapped. For example, an extra battery in a laptop is removable, as is a disk drive package inserted using SCA connectors. However, the latter can be hot swapped.  A laptop's display is not removable, nor is a non-redundant power supply.  Removing these components would impact the function of the overall packaging or is impossible due to the tight integration of the package.