MFC-640CW FAQs & Troubleshooting MFC-640CW Not your product? Sort by: Updated Date Popularity 4 Results 1. 25/03/2016 Discover the MAC address of the Brother network card 2. 08/01/2013 How do I know the current network configuration? 3. 29/06/2009 How do I factory reset the print server? 4. 02/11/2006 How do I set a password on my Brother network card? Network Settings FAQs & Troubleshooting