TD-4420DN/4420DN(FC) FAQs & Troubleshooting TD-4420DN/4420DN(FC) Not your product? Sort by Updated Date Popularity 3 Results 1. 04/12/2023 Where can I find my Brother printer's serial number? 2. 03/28/2022 I cannot save a file downloaded from the Brother support website (For Windows) 3. 01/29/2021 Installing the software (for Windows) Installation FAQs & Troubleshooting