I can confirm using the SinTech long adapter with a Western Digital SN720 256 GB (aka WD Black) NVME SSD works great with sleep and hibernation being flawless. On my early 2017 Macbook Air. Im getting 1700MB/s Read, and 1400MB/s write speeds. My original 128GB Apple SSD was getting about 800 MB/s read and write. Make sure to use the screw that came with the adapter. I don’t see any extra battery drain either. I was running OSX Catalina 10.15.3 and used a bootable USB and Time Machine backup. Formatted my WD SN720 with APFS. My 2017 Air came back right where I left off.