I run fire tv, with a local NAS for media at home. Need something for use in a camper. Thought about a Mi Box S with a 128gb flash drive with some media files on it. Any reason that wouldn't work? Can I remove the usb drive formatted as internal storage and copy files from a pc over to it? Will this setup allow you to download netflix content to the expanded storage drive?
It would work ok, you don't need to format it as android storage, NTFS is OK.
Also: If is a thumb drive is ok, if it's an HDD you'll run into the problem that the HdD will never stop spinning.