The camera, located in a permanent site, aways connects as a USB 2.0 on turning on the computer in the observatory. On disconnecting the cable and riconnecting it it will be properly recognized as USB 3.0. Did try to change cable and swap port, but always same. Other 2 ASI cameras I have (an ASI 120MM-S and an ASI462MC) work well as USB 3.0 cameras at start up when connected to the port and able used for the 1600MM Pro.
Any clue?