?Universal Compatibilty & After-Sales Service?This wireless keyboard and mice combo compatible with windows XP/Vista/7/8/10/X, Mac and other operating system. Works well with desktops, Chrome-book, PC, Laptop, Computer and more. If you encounter any problems during use, please contact us via email, we will provide a satisfactory solution. ?Full Size 104 Keys Wireless Keyboard?This wireless keyboard uses the classic 104-key design style, there are Number Lock indicator/ Caps Lock indicator/ Power indicator in the upper right corner of the keyboard, the bottom of the keyboard is equipped with an adjustable stand. ?Automatic Power Saving Function?The EDJO wireless keyboard and mouse combo has the function of automatically entering the power-saving state. When you stop using the keyboard more than 30 minutes, it will enter sleep mode respectively to save power. This feature greatly extends the battery life, you can click any button to activity the device. The keyboard need 1 x AA battery. (Battery Not Included). ?Plug & Play 2.4G Wireless Connection?Plug & play, no need to download any software. 2.4 GHz wireless provides a powerful and reliable connection up to 33 feet(10m) without any delays. ?Ergonomic Wireess Keyboard?EDJO Full-sized wireless keyboard is ergonomically designed with Palm Rest and folding holder that can keep it at an optimum slope, prevent your wrists from hurting while long sessions of typing. Keyboard is also designed with anti-slide pads so it will stay in place when you're typing quickly. Note: The USB receiver is in the battery compartment of the the keyboard, you can find it when open the keyboard battery cover.