When opening EzCad2 laser marking software with error – “can not find dongle! Software will work at demo state.“, there may be some reasons, please check:
A. Confirm whether the marking card needs an external dongle. At present, the mainstream marking cards are all integrated dongles and do not require an external USB dongle, but the old version marking cards still require an external USB dongle.
B. Insufficient power supply. The marking card needs a stable 5V 3A switching power supply for its power supply. Before connecting the marking card, be sure to measure whether the output of the switching power supply is 5V.
C. Whether the driver is installed correctly. In the device manager, if the marking card device is correctly installed, it will display BJJCZ Device, otherwise it will display an exclamation point or another device name.
D. Check the USB connection. The USB connection includes whether the board card is in good contact with the USB, whether the USB cable is on, and whether the USB cable is in good contact with the U port of the industrial computer. The user can replace the USB cable, replace the U port, and make the USB contact well and other methods.
E. There is a certain probability that there may be electromagnetic interference on site, causing USB communication to be interfered.