Is it a one off payment or monthly subscription for DSPCB PRO? DesignSpark PCB January 20, 2020 02:28 Updated It is a one-off payment for DSPCB PRO. Related articles How does a DesignSpark PCB PRO licence work? Why did DSPCB Pro start at version 9.0? Why can't the DSPCB Pro Library databook not find 'templates'? How do I activate DesignSpark PCB PRO? Does the license for the add-on modules expire? Comments 0 comments Please sign in to leave a comment.