The usb receiver to connect to a device is missing. Normally is stored in bottom of mouseThe Chonchow G100 Wireless USB Illuminated Compact Keyboard and Mouse is a sleek and modern keyboard and mouse set in black plastic. The compact design makes it easy to use in small spaces, with a QWERTY layout for standard typing efficiency. The illuminated features add a touch of style, while the wireless connectivity and USB connection offer convenience and flexibility. The keyboard and mouse come with a 1-year manufacturer warranty, ensuring quality and support for your computing needs.