WD Not recognized on my Mac


I have this WDBU6Y00200BBK which has partiiton. For some strange resaon, it is now not recognising to my mac. 

I used in the PC and Mac to copy the data. It is although recognizing on some macs but not on mine. 

Can some one pls help. I have some really important data which I cannot afford to lose. 



Hi there and welcome to the WD community.

Have you tried to connect the unit on a different computer? also try to use a different USB cable to see if this helps.