You can check this video to know: Setting Security & Privacy before installing driver on Mac.
1. Before installation, please ensure the printer is connected and turned on!
2. Double click the "pkg" installer to begin.
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3. If the driver can not open, then click "
" and go to "System Preferences" -> select "Security&Privacy"
4. Under "General", click "Open Anyway" to set up
5. Input your "Password" of your Mac. Then click "Modify Settings" .
Note: If you do not need to set a password, please skip this step.
6. Click "Open", then you can continue to install the driver.
ATTENTION: Before installation please ensure the printer is connected and turned on.