HL-L3220CDW FAQs & Troubleshooting HL-L3220CDW Not your product? Sort by: Updated Date Popularity 2 Results 1. 01/23/2023 Where can I find my Brother machine's serial number? 2. 12/19/2022 Can I use non-Brother or third party supplies with the Brother machine? Specification FAQs & Troubleshooting