Update 2: I fixed it finally.
The path given above for the rules.d appears to be incorrect. It needs to be /lib/dev/rules.d, not /usr/lib/dev/rules.d. Once I moved the rules file there it was picked up and ran.
I am having the same problem with Sabrent HD enclosures. I believe I found the correct idVendor=152d and idProduct=1561 but still cannot get it to work. Can you share your files with the idVendor and idProduct filled in?