Used this as it comes ie pre-formatted to exFAT.
Was able to write onto in from Android tablet, and view files on Humax HDR-1100S.
It is now "empty or unknown format" on tablet, but still readable on HDR, which reports : 23GB used, 34GB available of 58GB total size.
Was unmounted from HDR through settings.
Initial plan is to copy contents onto internal disk, beyond which ... ? ... do unto flash wrive???? What?
Any thoughts?