Wireless Keyboard and Mouse Combo, XTREMTEC Cute Kawaii Green Aesthetic Quiet Laptop Keyboard Teclado y Mouse Inalambrico Mac (Macaron Green). Item is brand new, box has been opened (as seen in pictures) but never used. NOTE: There is only ONE usb receiver!!! which is stored inside the keyboard, You can find this USB receiver in the battery case of your keyboard. The slot in the mouse is only for storing it and does not contain anything when you first open it.