Understanding this topic has been discussed many times, I wanted to add my recent experience with a new UPBv2 and two ZWO cameras as it is slightly different and leaves me very apprehensive about how dependable this device may be in the weeks/months to come.
I have a newly purchased UPBv2 (Nov. 18, 2022). When initially connecting devices, I did not know about these issues with USB3 cameras and simply connected my ASI2600MC-Pro to USB port 1; it worked without an issue. I also connected my ASI120-MC to USB port 2 and it worked without issue as well. This was all done on a workbench without the UPBv2 physically mounted to the scope.
After mounting the UPBv2 to the scope and reconnecting all devices,
neither ZWO camera would come online while connected to either
USB ports 1 or USB port 2.
After much troubleshooting and research, I came across the issues with USB port 1 and USB3 cameras. I found that moving either camera to USB port 3 and/or 4 (also USB3.1 ports) brings the cameras online and they work normally.
The issue I am encountering is that neither of these cameras will come online when connected to
USB port 2 in addition to USB port 1.
"Come online" being defined here as populating in ASCOM Diagnostics and available in ASI Studio as an ASCOM camera device.
I have been through the workaround steps repeatedly to no avail:
1. Powering off the rig
2. Disconnecting USB and 12v from the ASI2600MC-Pro
3. Powering on the rig and allowing UPBv2 to come online
4. Connecting USB to the ASI2600MC-Pro after 5-10 seconds
5. Connecting 12v to the ASI2600MC-Pro after an additional 5-10 seconds
6. Disconnect UPBv2 from PC
7. Reconnect UPBv2 to PC
As of this post, I have verified the latest version of ASCOM drivers and ZWO drivers are installed. The UPBv2 is running firmware version 2.4; this appears to be the most recent at this time.
I do now have all devices working in the following configuration:
- USB PORT 1: Mount (EQMOD USB Cable)
- USB PORT 2: ZWO EAF (USB 2 Device)
- USB PORT 3: ZWO ASI2600MC-Pro
Nothing I have tried so far has allowed me to fully reset USB port 2 on the UPBv2 to be used with either ZWO camera.
My fear at this point is that whatever happened with USB port 2 will inevitably happen to USB ports 3 and/or 4 leaving me with a non-functioning USB hub in a $600 device.