Hi Shel, as you were asking about how to name them, I assume you are interested in them. Excellent comparison of the devices can be found here:
http://fhoude34.free.fr/PortableHD.htm It lists the total GB you can transfer before running out of juice, transfer speeds, FAT32 compatibility,... Especially in the "autonomy" there are big differences! Some devices let you only backup 2-4GB before running out of battery, taking insane amount of time! Good light! fra
