I know this thread is fairly old now but i've been using it a lot to get Thunderbolt working on my rig, I really need it to use a RAID hard drive which is Thunderbolt 3 only.
Before I begin - the intended use is with an Akitio Thuder3 Quad Mini, a small 2.5" RAID TB3 drive. I know it works as it works perfectly with my laptop (Razer Blade 15") which has TB3 built in.
I've been trying for about a week to get Thunderbolt working on my main desktop. Motherboard is an ASUS X99-A.
I bought the ASUS Thunderboltex 3 and tried to get it working. Followed the helpful steps in this thread, and with a bit of BIOS config managed to get the drive to be detected when I open the Thunderbolt tray icon. I had issues getting Windows to mount the drive, it would say connected in the Thunderbolt dialog, but nothing came up in My Computer. Went into Disk Management and it displayed the drives as 'Dynamic Foreign', so I clicked import and it mounted on the computer, great! It worked for about 10 mins, then the drive disappeared, I can't get it to mount, nor even get it to appear in Disk Manager.
I've been tearing my hair out trying to get this to work, even replaced the ASUS card with the Gigabyte Alpine Ridge card - but the same problem, the drive shows as connected via Thunderbolt, but won't mount on Windows, and won't show in the disk manager.
Any ideas as to this issue? Any help is most appreciated.