WD 4Tb MyBook bizarre icon

The icons for the harddrive and the time machine are showing a peculiar icon. Vertical harddrive with an image on the left that looks like a tachometer. Green clockwise to red. There is a pointer in the red section. Concerned this is not just an icon, but means something is wrong with the harddrive itself. Anyone else have this problem. The Time machine icon used to be that of a flat harddrive facing you with a teal surface and a clock image on it. Neither WD or Apple seem to now what is going on and say it is the other who is responsible for it. I found another link on the web. Here is the link and it shows the icon I am talking about. 

http://community.wd.com/t5/External-Drives-for-Mac/not-recognizing-WD-2TB-MyBook/td-p/341913

Hello Catzm, welcome to the WD Community, this happens when you install the Turbo Drivers on your computer, this just means that you have the Western Digital performance based drivers.