What can I do if I cannot install the driver in the Mac system? Parblo Support May 23, 2018 09:09 Follow Open the "System Preferences" of your computer. Go to "Security and Privacy" to choose "Anywhere" Related articles How to install the drivers? How to connect A640 with my computer/laptop? Coast10 Driver How will I know if the driver is completely installed? What can I do if the pen doesn’t work? Comments 0 comments Please sign in to leave a comment.