FAX-2580C FAQs & Troubleshooting FAX-2580C Not your product? Sort by: Updated Date Popularity 3 Results 1. 12/13/2022 How to identify your Operating System (OS). 2. 11/10/2021 Open the Control Panel (For Windows) 3. 02/20/2014 Check the firmware version. Driver / Software FAQs & Troubleshooting