Side Duplex Unit for C284 C364 C454 C554 Side Auto Duplex Assembly This side duplex unit is designed for use with C284, C364, C454, and C554 models.It enables automatic two-sided printing by integrating directly into the printer's side assembly.The unit includes all necessary components for installation and supports within compatible devices.It functions as a direct replacement for existing or damaged duplex assemblies, consistent performance during print cycles.