I just wanted to post a note here saying that I just finished the installation of a "WD Blue SN550 NvMe SSD - 2Tb" into a PC Tower with a X99-Deluxe Motherboard. I'm now booting up and running my Windows 7 Pro OS from this new "Drive" location. The drive is mounted vertically about 2mm in front of a large Processor cooling fan. (Of course I have yet to locate that metal vertical mounting bracket, as there wasn't one in my motherboard box when I bought it .. What could possibly go wrong?)
The path to this install was painful, but everything fell into place when I found this sevenforums.com site, and a copy of your "NVME-UPDATES-WIN7x64.ZIP" package containing Microsoft's Hotfixs. (Note to Microsoft: It is very bad form to develop a Hotfix before pulling Win7 support - and then pulling the software patch - but keeping all the document posted on your download site explaining what you have done).
Some Key Install points:
1. Asus BIOS update was all that was needed to have MB recognize the new NvMe SSD stick drive.
2. Running the auto "UPDATES" routine supplied in this blog allowed Win7Pro-64 to then recognize the new drive. (A few reboots needed to sort everything out first)
3. Western Digital does not provide any attempt at specifically supplying or talking about a driver, but all is working when Win7 installs it's "Standard NVM Express Controller".
I am now a VERY VERY Happy camper, BIG THANKS to all the folks running and contributing to this website.
... Buddyb