PRTG Manual: Hover Popup
Whenever you rest the mouse pointer for a second over an object's icon in the device tree, a hover popup window will appear, showing details about this object. It contains information from the object's overview tab, as well as several graphs. The exact information provided depends on the kind of object you are hovering.
Hover Menu Example: VMware Sensor
Note: The hover popup does only appear if your browser is the currently focused window on your desktop. It disappears with every (automatic) page refresh. Hover popups are only available for definite objects, not for cumulated sensor icons showing names like "12 Sensors" or similar.
At the top of the hover popup window, several icons are shown which enable you to view or edit the current object. These are the most important options from this object's context menu which is shown when right-clicking it.
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