The board does a couple of jobs okay and then keeps randomly disconnecting. In Device manager the card disappears and then refreshes to show the card. The card is the newest V4 new style fiber FBLI - B - LV4 Model A
I’ve tried different cables, different laptops all on mains power, sorted out USB properties to stop it going to sleep, changed the 5v power supplies 3A and a 7A tried. My old board runs great no issues but no rotary function. It is powered directly from the usb cable so doesn’t need the 5v power supply but this show that the device manager entry is fine and so is the usb. Any ideas ? Faulty board ?.