Hi everyone.
I found a solution to use my Fast Track Ultra with Osx High Sierra.
I just downloaded this drive from m-audio:
Driver: M-Audio M-Track Quad_3.3.11.dmg
https://m-audio.com/support/drivers/m-track-quad
I had already install the last Fast Track Ultra's Driver on my mac and also installed this last M-Track Quad's Driver v3.3.11
I don't know why it worked, but my fast track ultra is working perfectly here.
I’m wondering if it could works a Fast Track Ultra with M-track Quad’s driver on O.S. Mojave or Catalina
Try it and let me know if it worked!
Thanks in advance.