Any problem having this recognized by Yosemite?

Many people myself included are having trouble with Yosemite recognizing a variety of external drives,in my case a WD 3 TB My passport
for Mac.Drive does not show up in Finder or desktop.

G-Technology 4TB G-DRIVE Desktop Hard Drive - USB 3.0

G-Technology 4TB G-DRIVE Desktop Hard Drive - USB 3.0

Product No Longer Available

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