Thought I would try out a Sandisk ssd being as they are a major name in flash memory, I can see now that was a mistake.  If I run a benchmark on the drive it seems to run dog poop slow.  After checking these forums, I can see why (trim not fully functional).  

I’m not going to sit around waiting for Sandisk to come up with working firmware.  Exchanging this drive for a working Crucial M4.  This is quite disappointing.

You made a wise decision, I will NEVER purchase SanDisk again. Intel/Samsung, or bust, for me.

There should be an explanation why it doesn’t work. I would consider giving tech support a call and see if you can have this to work.