HL-2600CN FAQs & Troubleshooting HL-2600CN Not your product? Sort by: Updated Date Popularity 3 Results 1. 01/27/2014 What is the optional DX-2600 used for and how do I install it? 2. 01/27/2014 What is the Optional LT-26CL used for and how do I install it? 3. 10/16/2006 What is the optional Compact Flash Card used for and how do I install it? Product Setup FAQs & Troubleshooting