With half the height of a mechanical switch, low profile mechanical switches provide the same speed, accuracy, and performance. The GL clicky switch has tactile feedback and a unique sound. GL tactile, GL linear, or GL clicky are the three available options. Next-generation RGB lighting that synchronizes lighting with any content is made possible by lightsync technology. Use the Logitech G hub software to customize each key or make unique animations using 16.8 million colors. The exquisitely designed G815 boasts an incredibly thin, yet sturdy, and long-lasting design thanks to its use of aircraft-grade aluminum alloy. For each game or app profile, five specific G-keys can be programmed with unique macros and commands. requires the Logitech G hub in order to set up and manage commands, profiles, and other things with ease. The USB 2.0 pass-through port is connected by the extra, special USB cable.