Following the suggestion in the forum by John and Alfred I tried using the ZWO CCD profile for both cameras but had no joy. I know the camera and cable are working as I have been using the camera and cable with the ASI software for planetary imaging so there are no issues there. I also tried out several other combinations in Stellarmate with the same result and in some instances had two 294s connected and in others only the one 294 connected Stellarmate would report unable to connect to camera two. Never mind how I tried I cant get the 662 to communicate with Stellarmate on the RPi. Not even when it is the only camera connected and irrespective of which USB port it is connected to.
What has gone through my mind is does the INDI driver recognise the 662 as it is a newish camera (released July 2022) so has the driver been updated for this camera or indeed does it need updating? I'm not familiar with the drivers side of things so would appreciate an explanation. Any suggestions as to what else I might try are welcome.

Many thanks

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