Cannot Enable "Write-caching policy" on WD My Passport

Hello all

I cant seem to enable Write-caching policy on my WD My Passport because there is not option in the Policies tab.
I have three of those USB drives, but none strangely have this option while an other USB device (Seagate) has that.
I need to enable it because the transfer speed is way too slow (about 59MBps only). Please see attached picture.

I am on Win7 x64

Any HELP highly appreciated.


Hi, can you share the model of your drive?