MFC-J4540DW(XL) FAQs & Troubleshooting MFC-J4540DW(XL) Not your product? Sort by: Updated Date Popularity 2 Results 1. 17/10/2022 Register the IC card for user authentication in Secure Function Lock 2. 23/04/2021 Restrict the functions available on your Brother machine and the number of prints. Advanced Functions (for Administrators) FAQs & Troubleshooting