Ya, AI changed up my words a bit in the above post but the main issue and what is going on is still there. Thnaks.

1. I'm guessing power-related. Either the USB port shuts down due to inactivity for power-saving. Or there's too much draw on the USB port, and a powered USB hub would be helpful.

2. Or if you check the log, maybe data is being transmitted and you're unaware, such as an ARC internal ping, etc. It's disconnected for the above reason or due to a communication issue. You didn't mention the baud rate, so lowering that might help

3. or the ezb is disconnecting because it's rebooting due to a brownout

At least, checking the log is a good idea when this happens. Just click on the log view to see the log in arc. It's on the top ribbon menu where you choose the workspace desktops. View the log to see what it's reporting.

P.S., AI changes because you had the checkbox checked to trigger it. But I always recommend using AI to reword posts because it adds clarity and fixes grammar and other issues. I could really use it more often, haha

Let's break down the possible reasons and potential solutions for your intermittent EZ-B disconnection issues with ARC:

1. USB Power Management / Inactivity Shutdown

Windows 11 (or the USB host controller) may power down ports if they’re perceived as idle.
Try disabling USB power-saving features:
- Open Device Manager, then under Universal Serial Bus Controllers, select the USB Root Hub properties and uncheck "Allow the computer to turn off this device to save power."
This can prevent the port from shutting down during periods of inactivity.

2. Insufficient Power / Overdraw

If there’s too much draw on the USB port, the EZ-B might brown out or reboot.
Consider using a powered USB hub to ensure each EZ-B receives stable power.
Brownouts can cause the EZ-B to restart and disconnect briefly.

3. Communication Issues

Check your baud rate in ARC’s connection settings: If it’s too high for the USB-to-serial converter, lowering it might improve reliability.
Even if there isn’t whole data streaming, periodic pings or internal communications (for keep-alives) might trigger a disconnect if there’s any latency or data corruption.

4. EMI / Environmental Factors

Electromagnetic interference from nearby power cables can sometimes affect serial connections, although this is less likely if you’ve already ruled out power issues.
It might be worth trying a different cable or rerouting cables away from large power lines to see if it improves connectivity.

Next Steps

1. Disable USB Power Saving: Check your USB settings in Device Manager.
2. Try a Powered USB Hub: This can eliminate potential brownouts.
3. Lower the Baud Rate: Adjust the baud rate in your ARC connection settings to see if that improves stability.
4. Cable Check: Consider testing with another USB-to-serial cable or ensuring cables are securely connected and not near strong EMI sources.

Have you had a chance to review the Windows power settings or try a powered hub already? Any additional details from the Connection Diagnostic log might also help pinpoint the disconnect reason. Let me know if any of these suggestions improve the connection stability or if you need further clarification.

Thank you, I will look into each one of these suggestions. I don't think that the ezb is rebooting but I'll check that out also.  Thanks, I report back.

i think there's also a usb suspend option in the power management settings that can be disabled

That's a great suggestion, DJ_Sures. Disabling the USB selective suspend option in Windows can definitely help prevent the disconnections you've been experiencing with your EZ-B controllers.

Here’s how you can disable USB selective suspend on Windows:

1. Open Power Options:

   • Press Windows + X, then click on "Power Options" (or search for "Edit power plan" in the Start menu).

2. Edit Your Power Plan:

   • Click on "Change plan settings" next to your current power plan.
   • Then click on "Change advanced power settings."

3. Disable USB Selective Suspend:

   • In the Advanced Settings dialog, scroll down to find "USB settings."
   • Expand "USB selective suspend setting."
   • Change the setting to "Disabled" for both "On battery" and "Plugged in" (if applicable).

4. Apply the Changes:

   • Click "Apply" and then "OK" to close the dialog.

Testing after these changes should help you determine if this setting is contributing to the disconnect issues.

Are you able to check and adjust this setting along with the other suggestions? Let me know if this helps or if you need any further assistance!

Brilliant. I'll look into this in the morning. I'll still keep in mind the rest of your suggestions just in case. Thanks for the personal and professional help. I'll post back when I know more.

I'm happy I could help! Keep us updated on your progress after you've had a chance to review the settings and try out the suggestions. If you run into any further issues or have additional questions, feel free to post back. Enjoy your testing and have a great morning!