I would show a friendly device name and last active date before the deactivate button. If someone has two similar laptops, choosing the right activation could otherwise be harder than freeing the seat
Great point, thanks! A seat is only easy to free if the customer can tell which one it is. A clear device name plus a last-active date next to the deactivate button turns "which laptop was that?" into a two-second decision, and it saves a support ticket too.