Does anyone know where I can obtain PCIe 424 drivers?

[Renaissance Man]

The PCIe 424 driver download is nowhere to be found on MOTU's web site.
I'm "upgrading" from my early 2008 8 core 2,8Ghz Mac Pro running ElCapitan to a 2012 12-Core 3.46 Ghz Mac Pro running Mojave.
My intent is to utilize my three 2408 MK3's, one 24I/O, a PCIe 424 card and MIDI timepiece MTP AV USB for a few more years until I can afford to start fresh with a new Mac, interfaces etc.
Everything was moving along fine until it came to the missing drivers...

[James Steele]

I just went to MOTU's site and chose HD192 (interface I used to use) which I *know* requires the PCIe-424 card and it has installers available. I would think that would install the PCIe-424 drivers:

https://motu.com/en-us/download/#category=1&product=10

Actually... better still, here's the page for downloading 2408 Mk3:

https://motu.com/en-us/download/#category=1&product=11

Although I suspect it's all just the same PCIe-424 drivers in each.

You should just be able to go to Downloads at MOTU and choose your device.

[Renaissance Man]

That's the 2408 MK3 MOTU Audio Installer that I used and reinstalled several times- Version: 73220, Release Date: July 1, 2017.
I did a fresh install of Mac Mojave OS 10.14.6 on a new SSD. In the system report the mid 2012 machine recognizes the PCIe 424 card but on the Driver Installed line it says No.

[Renaissance Man]

With help from MOTU tech support, I found it! Went to System Preferences > Security & Privacy and on the top menu (General) there was a notification on the bottom half of the page that said the software was being blocked. Checked it and Viola! it loaded and is working now!
It's hard to get good at all this stuff when you do so seldom!
Thanks for your help!