Brother MFC 9970CDW - Manual (Page 122)

Security features
117
9
Import and export a CA certificate
9
You can store a CA certificate on the machine by importing and exporting.
How to import a CA certificate
9
a
Click Configure CA Certificate on the Configure Certificate page.
b
Click Import CA Certificate. Click Submit.
How to export a CA certificate
9
a Click Configure CA Certificate on the Configure Certificate page.
b Choose the certificate you want to export and click Export. Click Submit.