?Widely Compatibility?: E-YOOSO 60% percent mechanical keyboard is plug and play, no need any drive, it compatible for Windows 2000/XP/Vista/7/8/10, Mac OS (Note: multimedia shortcuts are not available in Mac OS system). It also compatible with PS5/PS4, Works well with Desktops, Chrome-book, PC, Laptop, Computer, and more. ?Hot-swappable and double Injection Keycap?: Hot-swap PCB allows you to replace 3 pins switches freely without soldering issue, you can enjoy the fun of DIY different switches on one keyboard, making your own unique keyboard. The double injection keycap provide crystal clear uniform backlight and never fade. (Come with two extra keycaps for free: ESC and space bar). ?18 Backlight Modes?: E-YOOSO mechanical gaming keyboard has 18 backlight modes. You can switch different lighting modes by "FN2+9", you can also adjust light brightness by "FN2 + -/+". In addition, You can also enter custom lighting setup mode by "FN2+ ?". If you need't backlit then you can turn off by "FN2+0". The double-shot injection molded keycaps provide elegant and clear uniform backlight without glare. ?Excellent Red Switch?: E-OOSO mechanical keyboard uses red switches, 50 million keystrokes lifespan, 2.0mm Distance to actuation, 45g actuation force, easier to trigger, quiet click sound and fast action with minimal resistance, No paragraph sense, provide you with a quiet typing environment, red switch is the best choose using in office. ?Portable 60% Percent Mechanical Keyboard?: This is a 61 keys compact mini mechanical keyboard with metal panel and type-c removable connecting line, it's good for all environment, business travel games office home use, without Numpad, more practical for Gamers and Typist, give more space to your desktop.