The Devices Header in Import Panel is not visible

Is the card Cfexpress? For performance reasons, both Mac and Windows tell LR that Cfexpress cards are non-removable media (like an external disk drive), so LR won't present the Devices section or the Eject option. 

Cfexpress cards have always worked this way on Windows LR, but the behavior changed in Mac LR 12.4 to be like that on Windows:

https://community.adobe.com/t5/lightroom-classic-bugs/p-import-sometimes-fails-to-eject-drives-it-considers-removable-mac-only/idc-p/13863958#M44334

You could submit a feature request that LR recognize Cfexpress cards specially and provide the Eject option:

https://community.adobe.com/t5/lightroom-classic-ideas/how-do-i-write-a-feature-request/idi-p/12386378

Some time back Adobe attempted to deprecate the use of Devices. Being in favor of using Files. They had some issues with some members use of Devices. As a result the Devices may not initially show up if no device is actually connected. Apparently they prefer we use Files not Devices.

That being said. Do you have a device, such as a camera , attached? Just tested my rig. If no device is attached I only see Files, if I attach my X-T5, then I see Devices (and files).