To reach this point, you should have just just connected your audio interface and all of your audio gear and instruments, and started the audio setup wizard as explained in this help article.
You should now be looking at Step 2 of the audio setup wizard. Click the Audio Input Device list box (pictured below with arrow).
You see the list box open, and you need to examine the list box options until you see the option for "MOTU M Series - ASIO" (pictured below with arrow). This is the software driver for your Motu M2 audio interface. Click this option in the list to select it.
Next find the section of the wizard under the text header "Audio Input Ports". All of the input ports are selected/activated with checkboxes. Scroll down to the bottom of the list and uncheck the four input ports at the bottom: "Loopback 1", "Loopback 2", "Loopback Mix 1", and "Loopback Mix 2" (pictured below with arrow). This leaves the two input ports "In 1" and "In 2" checked/enabled at the top of this list of input ports.
You will also see "Test Results" reported on the right side of the screen (pictured below). You should see a reported latency value of approximately 3ms (i.e. 3 milliseconds, which is three-thousandths of a second), which is what the Windows system is reporting back to the JamKazam app. Sometimes this value is fairly accurate, and sometimes less so - more on that in a minute. Your settings on the Motu M2 should already be optimized if you followed the instructions in our help article on how to install the M2 software driver.
But if you're not seeing 3ms reported for Latency, or if you just want to double-check your settings, then click the orange "ASIO Settings" button. This opens the Motu M2 settings application window. Visually verify that Buffer Size is set to "16", and that the checkbox for "Use lowest latency safety offsets" is checked (pictured below with arrows). If you've opened the settings window, when you are done visually verifying the settings, just click the "X" in the upper right corner of the window to close it.
There is one more optimization that you can make, as follows. Click the Frame Size list box to open it, and then select the "1" value (pictured below with arrow).
Please note that if either the Latency or I/O scores under Test Results are displayed in dark red, this means a test has failed, and the orange Next button in the bottom right corner of the wizard will be disabled. If this happens to you, simply click the orange Resync button (pictured above with arrow) to make the JamKazam test run again. Once in a while, an audio interface test will fail, but if you just run it again, it will often pass.
You will notice that your latency is still reported as 3ms, but this frame size change does actually save you some latency. The Windows system is reporting 3ms, but Windows does not report audio processing latency with highly reliable accuracy. JamKazam has conducted in-depth scientific/mathematical measurements (using a technique called loopback testing with waveform analysis) and verified that the audio processing latency for your MOTU M2 with these settings is actually 3 milliseconds.
At this point, we recommend that you verify with your own ears that the audio interface settings you have chosen are working well. To do this, put on the headphones connected to your audio interface and grab your instrument and/or mic. Play your instrument and/or sing - do what you're going to actually do musically - and listen to how the audio sounds in your headphones. You should hear the audio clearly, and it should sound very good/clean. You should not hear any bad audio artifacts - like crackling, snapping, dropouts, or other audio glitches.
If you can't hear anything at all, you have something set up wrong. First, click the orange Resync button to reset your audio interface. If you still don't hear anything, check that your gain knobs are turned up on your audio inputs. Check that any on/off switches on your microphones or instruments are set to on. Check that your headphone volume knob is turned up. Generally fiddle with all of these kinds of things to make sure everything is connected properly, turned on, and turned up. You can also check that you don't have a microphone or instrument port set to "line" level.
Please note that you may only hear your audio in one headphone, not in stereo in both headphones, at this point in the setup wizard. Don't worry about this. We'll get this sorted out in Step 3 next.
If your audio sounds clean and good, then you are done with Step 2 of the wizard. Please click the orange Next button (pictured below with arrow) to move forward to Step 3 of the wizard, and then click here for the Step 3 help doc instructions.