I have a brand new ASI290MM that I am using as a guide cam. I also have a brand new ASI533MC which I would like to use as a imaging camera. It appears I cannot have both cameras connected to my PC at the same time. If the ASI533 is the only camera connected, SharpCap, ASIImg and FireCapture all see the camera. If the ASI290 is attached and is the only camera, the likewise, SharpCap, ASIImg and FireCapture all see that camera. If I attach the ASI290 and the ASI533 then my PC sees 2 ASI290 cameras in SharpCap, ASIImg and FireCapture. Interesting enough, the Windows 10 Device Manager sees two separate cameras. See the attached screen shots showing the issue. I have deleted all ZWO drivers and reinstalled them. I have deleted SharpCap and then installed both 32bit and 64bit versions of both the released 3.2 and beta 3.3. All versions show the same thing. ASIImg also shows 2 ASI290 cameras. I'm guessing this is probably a driver issue but I don't have a clue what to do now. At the moment my beautiful ASI533 is nothing but a door stop as I can't not have my ASI290 not working as a guide camera. Also, on a guess I did try both menu items of the upper ASI290 and lower ASI290 items thinking perhaps it was just a menu label bug but that is not it. Both items are the ASI290.