WD elements 1 TB

I have bought a WD elements and a Apple camera powered adapter.
Purpose to transfer files

Irritating to annoying where the problem is as the following happens.
All usb pen drives work, WD drive works as and when it wishes to.
Only one other drive does not work.
Have a tower of drives in one case, they all work, this is like 2006 period.

So WD elements one week old.

All drives are formatted for OS in the same format none differ in any way other than age and size.
WD elements when plugged into desktop Mac works, tried this just once.

Any ideas ?