USB receiver is inside the flap that opens the cardboard box from the middle or inside the batter component of the keyboard. Unifying receiver makes setup of your TV keyboard a snap with its plug and play design. USB port location is indicated on the packaging of the product - please refer to the image on the packaging and refer to 6th image on Amazon website Built-in 3.5 inch touchpad Enjoy effortless control of your TV-connected computer with the wireless keyboard Compact and slim design makes it perfect for the living room Comfortable and quiet keys 10m wireless range ensures trouble-free connection in the largest room Eliminate any learning curve while adding easy-access volume controls and arrow keys with the familiar, media-friendly key layout 18 months battery life,1yr Limited Hardware warranty Works with Windows 7, 8, 10 or later as well as Android 5.0 or later and Chrome OS