Yellow Exclamation Point
A yellow exclamation point next to a device in Device Manager means that Windows has identified a problem of some kind of problem with that device.
This helps notify you that there might be a system resource conflict, a driver issue or another problem. Seeing the yellow mark itself doesn’t give you any valuable information other than notify you of a problem. It does mean that a “Device Manager Error Code” has been generated. To fix whatever problem is going on, you’ll need to view this code and troubleshoot accordingly.