HUION drivers and Manuals
Instalation must be done by user with administrator privileges on computer.
First installation recommendation: do not connect graphics tablet or pen display to computer via USB before driver is installed.
Update installation recommendation:: disconnect graphics tablet or pen display USB cable from computer, uninstall existing driver and install new one.
For detail instructions see User Manual.
MAC OS X Mojave 10.14 users problems, please, read Related notes on macOS Mojave.