Thank you for your answer, it was enough for the solution.
When i right click and open the properties of the USB FP5 Serial Converter A there was an option “Load VCP” in the advanced tab. This option was checked only for Converter C.
When i checked it for all of them and unplug - reinserted the device, all ports were under Ports (COM & LPT)
The FlashPro5 port that i already seen was the UART port.
The baud rate however shown as 9600 not 115200. You need to change it to 115200 to communicate with the board.
