Thank you - I came across your post and it was very helpful. I'm curious. I'm looking for an extra travel charger as well for my xps 7390, but I was also looking for a simple small-ish thunderbolt hub that included ethernet, SD card slot and some USB slots. The more I think about it, getting just 1 thing that has everything I need would be easier. Do you have any recommendations for a thunderbolt hub that would also charge?