That's very neat! Personally, these days I have less of a need for that kind of thing, given that I can just plug the camera or disk into my phone directly (I

That's very neat! Personally, these days I have less of a need for that kind of thing, given that I can just plug the camera or disk into my phone directly (I suspect a powered USB hub and plugging in both at the same time might even work as well?), but I vaguely recall dedicated "copy everything off this card onto a hard drive" devices being sold, and I don't doubt that some photographers still use these in their workflow.