You can define a Preview which is displayed later in PARTdataManager (Part selection or Part view) for each component.

In order to open and edit this preview, click on the relevant *.png file in the directory tree.

The tabbed page Picture file is displayed.

Edit: In order to edit the preview picture set on the tabbed page General under General -> Preview, click on this button.

-> Your graphics editor is launched.

Import: Click on this button in order to define a (new) image file as the preview.

Choose the corresponding file in the Import file window.