Well it looks like Yamaha removed the downloadlink. It absolutely was there and I was able to download it.
This is what the included document says:
Yamaha Steinberg USB Driver V1.9.10 for Windows Release Notes
Contents System Requirements for Software Main Revisions and Enhancements Legacy Updates
System Requirements for Software
NOTE - Note that the system requirements may be slightly different from those described below depending on the particular operating system. - Note that the operating system and interface may be different from those described below depending on the product. For details, refer to the particular operation manual and website for each product.
OS Windows 7 SP1/Windows 8.1/Windows 10 CPU Pentium/Athlon 2 GHz or faster (dual core processor recommended) Memory 1 GB or more Interface Equipped with a USB 1.1 or 2.0 connector Hard Disk Free disk space of 100 MB or more; high-speed hard disk
Main Revisions and Enhancements
V1.9.9 to V1.9.10 - Solved a problem in which noise may occur in a certain environment. - Solved a problem in which a certain DAW software would terminate abnormally when switching the sample rate setting.
Also found an important notice :
Yamaha Steinberg USB Driver V1.9.8 for Win 10/8.1/7(SP1) (32bit/64bit)
We identified a bug with V1.9.10 firmware, please use this stable version(V1.9.8).
Well, as I understand, the people at which there is a sharp noise, again left without a working driver ((( 1.9.8 tried it, still there is a sharp noise ( steinberg reports when now to wait for a new driver?