Thank you, this was helpful. I’m also using Pop!_OS, so this reinforces my belief that it’s just a graphical issue. I also see this when checking for updates sometimes.

I reckon this is probably what the issue is. Maybe it’s of a device type where an icon wasn’t created or where some reference to the icon’s image is broken. Thank you.

Everything seems to be working fine and it mounts successfully. Thank you for the suggestion.

Thanks for responding, but no, I have 3 devices plugged in at the moment and the icons don’t change regardless of which one I have selected. This is the only one with an ‘x’ icon. It doesn’t appear to prevent me from using it, but I’m unsure if it’s indicative of an issue with the device itself. Maybe it just means it isn’t a recognised device. Kind of wish Nemo had tooltips or something.