Plug & Play 2.4G Wireless KeyboardThis wireless keyboard is 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. Note: The USB is in the battery compartment of the keyboard, you can find it when open the keyboard battery cover. Smart Power Saving FunctionThis wireless keyboard has auto-enter power saving function. 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) Wireless Keyboard with Comfortable Palm RestThis wireless keyboard is ergonomically designed with comfortable palm rest and folding holder that can keep it at an optimum slopeprevent your wrists from hurting while long sessions of typing. Keyboard is also designed with anti-slide pads so it can stay in place when you