Do not buy a random "EZCAD3 dongle" from eBay unless the seller guarantees it is pre-loaded with the correct firmware for your specific laser control card (e.g., a "EZCAD3 for EC2" board).
It is crucial for users to understand that Ezcad3 does not utilize a traditional "software license key" (a string of alphanumeric characters entered into a text box). ezcad3 license key
To legally obtain EZCAD3 with a valid license: Do not buy a random "EZCAD3 dongle" from
