Never used a QHY5-II, but I never could get a QHY 5 to EVER be recognised by my computer running 7. XP, yes, after a LOT of trial and tribulations, but NEVER on 7, despite doing EVERYTHING QHY says and the user groups.
I also found it interferes with Atik drivers, and it was being recognised as some Atik product that I did not even have - and STILL could not connect to it - the red light NEVER came on.
And yet, the Orion version I never had an issue with. Really odd (I assume the Orion Starshoot autoguider is a QHY5 - could be wrong).
QHY's software is a little peculiar to put it mildly, but for the price, IF you get it to work, well...
Good luck. Failing that, try the Orion Starshoot.
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