www.makemkv.com

I already have a WH14NS40. I don't really do any ripping at all. I would just rather not plop a Benjamin down on a new drive just to get 4K/UHD support.

Run MakeMKV. What does it say about your drive?

And, if you're not ripping, why do you worry about UHD support?

If your drive is UHD ripping capable and LibreDrive enabled, you can use MakeMKV as an "on-the-fly" decryption engine and watch your UHD discs directly.