??RGB Backlit ?: 16.8 Million Color combinations , multiple backlit mode ( Aurora, Ripple, Music, Rainbow , Waves, Gradient, Windmill, Spectrum and single light), no drivers needed. Plug & Play small form factor keyboard ??Gateron Optical Switches ?Gateron optical switches can be hotswapped at wish and replaced by other switches. Hot swap keyboard do not recquire you to solder / desolder switches. (Hot Swappable with Optical switches only) ? ?ABS Doubleshot keycaps?The GK 61 doubleshot abs stock keycaps , change them at wishes thanks to the keypuller included to the package. ? ?Macro recording & Other features ? Record macros through the software, customize advanced features , personnalize function keys... Full Anti Ghosting Mode (NKRO). ? ?Compatibility with Mac and Windows?: Compatible with Windows 10, Win 8, Win 7, Win Vista, Windows XP and Mac OS , the GK 61 comes with a 60 inches USB Type C to Type-A cable. The keyboard is adapted for all environnement, Home & Office use, a small form factor for tiny spaces.