This Full-size large print backlit keyboard with 12 multimedia shortcuts, can provide you with the best entertainment experience. This USB keyboard takes away the hassle of power charging or swapping out batteries and is easy to setup. No drivers required. Bright and evenly distributed backlit keys, easy typing in lower light environment. Backlit can choose to turn on/off and adjust brightness. Compatible with Windows 2000/XP/7/8/10, Vista,Raspberry Pi 3/4, Mac OS. Works with your PC, laptop. How can I adjustable the Large letters keyboard backlit? PressFN+PS ：Turn on/off backlit PressFN+Sl ： adjust 7 colors The font of this keyboard seems to be larger than that of ordinary keyboards? The design of this large font keyboard can display the letters on the keyboard more clearly. 4X larger than standard keyboard fonts, clear and easy to read, and can really help those who have trouble seeing keyboards. Can I still see easily and type normally when using the keyboard at night? Yes, the fonts are large enough and the backlight can be turned on so we can see in dim environments. Backlit design, protect your eyes , make you can typing in the dark easily. Could I lock the keyboard function when having a pet at home to avoid it causing trouble? Locking the keyboard involves holding down both the Fn and F11 keys together. Once locked, the keyboard will be rendered inactive. To regain functionality, simply press the Fn and F11 keys once more or reinsert the USB cable. Why Choose Our Keyboard? 4X larger fonts for easy visibility,Ergonomic design reduces wrist fatigue,7 Backlights and 3 adjust brightness, Hassle-Free Plug & Play Connectivity