RJ-4030 FAQs & Troubleshooting RJ-4030 Not your product? Sort by Updated Date Popularity 3 Results 1. 24/03/2022 Printing is not possible. (USB connection) 2. 26/11/2020 How do I connect RJ printer to my computer? 3. 12/10/2018 Which interface cable can I use? Connecting to a Computer FAQs & Troubleshooting