I have been using pixhawk for six months and I am very satisified with it. External usb&led adapter is a good option to download the dflogs from the plane because its not possible to reach the side usb port of pixhawk in the fuselage.
Last week I bought 3 new pixhawk boards from a reliable chinese vendor and 5 led&usb adapters but I could not make a connection between the boards using external adapters. When I connect it powers the board, pixhawk starts but no light on the external led and pc does not recognize the pixhawk itself via usb.
When I use the default usb port (side) pc recognizes the pixhawk.
First, I thought that one of the boards or adapters was broken but what is the possibility of 3 broken boards or 5 broken usb&led adapters at the same time?
Do you have any idea about what has been changed because I was able to use the led&usb adapter on my previous plane with another pixhawk from the same vendor?