I haven't seen documented success with Monterey yet and I'm personally not willing to update my Mac to Monterey to test. I'm going to need a big external hard disk before I can run Monterey in a VM - and that's going to be an imperfect test since it won't be running "bare metal". But I think I'll try the VM and see what happens.

I have seen success with Big Sur + M1 + Connect. The main key was to pay careful attention to the installation instructions.

Thanks so much Jason and Bill!

After reading the previous post written by Jason, I figured it out by adding one simples step: after following the Steinberg's instructions for changing the privacy policy, we have to go to "System" -> "Security & Privacy" to approve the changes for the driver.

Much appreciation for the help!

Bill, the screenshot provided shows the OS configuration as Monterey (12.2.1 to be exact).

[quotePost id=115523]So please clarify - does it now work both standalone and in pro?

And Jason mentioned Monterey but you didn't.

To possibly help others with your configuration would you mind itemizing ALL of the hardware you are using and ALL of the connections you are making that got it working?
[/quotePost]

1. It works both in standalone and in pro.
2. System: macOS Monterey ver. 12.2.1
3.1 MacBook Pro (16-inch, 2021) (M1 Pro, RAM = 32GB, SSD = 1TB )
3.2 Connection: USB-Type A to USB - B to USB-Type C)

The essential steps in my thoughts:

A.
[quotePost id=112520]I personally cannot test M1.

Steinberg has special instructions for Apple Silicon.

Source: https://helpcenter.steinberg.de/hc/en-us/articles/360020574899-Yamaha-Steinberg-USB-Driver-installation-on-an-Apple-silicon-based-Mac

Change the macOS security policy
This is required only if the Yamaha Steinberg USB Driver, the Yamaha Steinberg Thunderbolt Driver or the TOOLS software that includes the driver is installed on an Apple silicon-based Mac for the first time.

To install the driver or the TOOLS on Macs with Intel processors, please skip this section and go to "Install the driver or the TOOLS software package"

Shut down your Mac
Press and hold the power button until you see "Loading startup options …"
Your Mac will boot into Recovery mode
Click Options (gear icon), then click Continue
In macOS Recovery, select the volume on which you want to install the driver and click Next.
In macOS Recovery, choose your account and click Next. Enter the password and click Continue
In the top menu, go to Utilities → Startup Security Utility
Select the system on which you want to install the driver. If the disk is encrypted with FileVault, click Unlock, enter the password, and then click Unlock
Click Security Policy, choose Reduced Security and check the option to allow user management of kernel extensions from identified developers
Click OK. Enter the password for your account and click OK.
Restart your Mac from Apple menu

Note: the "tools" instructions should not apply to keyboards - so I didn't copy that section.

Although Steinberg has a later driver - those updates wouldn't be for MODX so there shouldn't be a need to upgrade to say driver version 3.1.1. The main reason for 3.1.1 would be for MacOS 12.x (Monterey). Although this line of 3.1.1 is perhaps interesting: "Solved some minor problems".

Assumption is also that Rosetta has already been installed on your Mac and is ready to go. If so, it should be automatically applied although some apps have a checkbox option to open with Rosetta (universal ones like Safari).
[/quotePost]

B.
Install Rosetta from Terminal manually.

C.
Install "MODX Connect V1.1.0 for Mac macOS 11 and macOS 10.15-macOS 10.12", "Yamaha Steinberg USB Driver V3.1.1 for Mac macOS 11/12(Intel/Apple silicon with Rosetta 2)", and update the MODX firmware to the newest (v.2.52)

D.
Last step that I did not see other post mentioned: Double check "System" -> "Security & Privacy", if there is anything is blocked from loading (as the image below).

Hope it helps!

To circle back ...

The last step was "posted" as the instructions to follow Steinberg's detailed installation documentation. On the Yamaha Steinberg USB Driver download page there is a link to full instructions which cover both Apple Silicon and Intel Silicon cases. The docs show the Security & Privacy steps with pictures.

That wasn't why I came back. Last I mentioned not wanting to update my Big Sur (macOS 11) to Monterey (macOS 12) due to concerns of compatibility issues. Although I have still not upgraded my base operating system, I have created a Monterey VM to test for compatibility.

What I found was (Montage) Connect which only shows compatibility for older operating systems works fine under Monterey. I had no issue installing the driver or Connect and getting Connect to .. well, connect.

The caveat here is that this isn't bare metal Monterey. However, I would think that would inhibit success more than contribute to it.

I was able to transfer my Performance from the Montage to Connect using the "PC <== Montage" icon. Bulk dumps worked fine.

This thread documents bare metal success with an M1 (Apple Silicon) MODX using Monterey w/drivers and Connect (latest connect using latest MODX firmware). And now also VM success with Intel silicon Montage w/drivers and Connect. In my case you can see my (Montage) firmware is older which is why I was testing a previous version of Connect. I have no reason to believe the latest firmware+Connect would not work as well.