Very Basic question : At first connection the board LPC55S69-EVK is not recognized when connecting it to the PC through "Debug probe" USB connector : Windows tells the driver for the board is not found. I could not find indication in documentation that such driver should be uploaded ? It looks strange since no one on the forum seems to have had this issue. Note that on this same USB port of the PC , I have some times ago connected other type of NXP EVK board and it worked properly without having any specific driver to load. NB : of course I have loaded the board SDK beforehand.