The three interchangeable side panels are specifically designed for FPS, MOBA and MMORPG players. All side panel buttons come with mechanical switches and are programmable through the Razer Synapse software. Razer also includes an upgraded 5G optical sensor with 16,000 DPI and 1,000 Hz polling rate.
https://www.notebookcheck.net/Razer-launches-Naga-Trinity-mouse-with-interchangeable-side-panels.262510.0.html