Only one drive of four appears on Windows 10

My Gspeed esata worked fine under Windows 7 (I use it as 4 individual drives, not RAID). I just upgraded to Windows 10 (clean install) and now Windows can only see the top drive in the unit (even if I swap drives). Even in Disk Management I only see one drive. Any ideas?

I solved this. Needed a manufacturer’s driver for my eSata chip.