Ergonomic Wireess KeyboardEDJO 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. Plug & Play 2.4G Wireless ConnectionPlug & 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.