Help with My Passport & backup

WD External Drives WD Portable Drives
2

Can you please provide more information about your questions.

Regarding the size of the folder (37kMB) what meature is that? Or could it be a gramatical error?

Now, the regarding the $recycle.bin folder please see the following link.

http://answers.microsoft.com/en-us/windows/forum/windows_vista-performance/what-purpose-does-the-hidden-folder-recyclebin/ca654dd7-2190-429e-91fd-11502218c95e

I would not recommend deleting that folder since it will give you the option to undelete a file that you deleted by mistake.