Personally, I lost photos and video by making a simple copy glue my computer to tc. some of the files come with a? when I use iPhoto, and a mac as well. it is better to use a usb dd, and it is much faster than managing data over wifi. Moreover, apple me indicate to use it as a NAS. which is far from true. and each test all libraries are duplicated. and as Macs are not able to properly handle the copy / paste with over 100 photos. This is a disaster overpriced