My passport driver name problem

I have two WD passports one is used to hold my Photoshop catalogue the other for back ups.
I have 2 USB slots one is USB 3 which was called the d drive and the other a usb2 drive called the F .
Now which ever usb slot I plug the catalogue drive into Windows 7 Explorer calls it F and the back up passport is called D wherever plugged in.
Photoshop Elements catalogue is called D:/ external catalogue and it won’t recognise the passport plugged in called F .
Can anyone help?

Hi BaronBirder,

Have you tried to access the files stored in the drive through different computer ?

Otherwise, you can contact WD’s Technical Support about this from the link given below.

To Contact WD for Technical Support

The link below will allow you to call support.