QMK/VIA Software Compatibility - QMK / VIA is an open source software for keyboards that allows anyone to program and reassign each key easily and quickly. You can customize your own keyboard layouts, shortcuts, backlight effects, and more. Joint-Mount Design: The C3 Pro uses a joint mount structure to reduce sound resonance and add more flexibility to writing. Coupled with the sound absorbing foam and foam of the case, it provides you with a quieter and smoother typing experience. 1000Hz Polling Rate & NKRO - Powered by the high-performance ARM MCU architecture with 256KB flash, it provides a 1000Hz polling rate for fast and responsive write speed in your work and play. The NKRO function is convenient to help you enter multiple keystrokes at once. Easily switch between macOS and Windows - Press the FN + CAPS key combo to instantly switch the keyboard working system to Mac / Win. Fits universal keycaps compatible with both systems. Bright Double Shot ABS Keycaps - Made through the ABS double-shot process, the keycaps are durable and wear-resistant. Meanwhile, glowing legends illuminated by the north-facing LED present a glamorous look at your fingertips. And you can also switch from more than 14 kinds of rgb backlight. Hot Swapping: Hot-swappable plugs are mounted on the PCB, so you can install or change the switches without soldering. The PCB supports 3-pin and 5-pin MX mechanical switches.