Only 1 USB RECEIVER INSERTED ON THE BACK OF THE KEYBOARD. THERE IS A ON/OFF SWITCH FOR THE KEYBOARD ON THE RIGHT SIDE, PLS MAKE SURE IT HAS BEEN TURNED ON BEFORE USING | Integrated Ergonomics for Long-Lasting Comfort -- The keyboard features an integrated palm rest for maximum comfort, the shape of mouse is also comfortable and ergonomic, which feels every fingers have a place to rest, you are now ensured of good grip and long-lasting comfort | Provide Everything You Need for A Smooth Typing -- The low-profile silent keys with a soft and quiet keystroke, the adjustable angle, anti-slip rubber pad, the DPI button to adjust the speed of your cursor, not even to mention the full function layout, this keyboard and mouse provides everything for smooth typing | One Receiver for Both the Keyboard and Mouse -- The plug-direct receives allows the mouse and keyboard to work wirelessly within a range of 10 meters, just plug it into a free USB port in your PC or laptop and you’re good to go! Both the keyboard and mouse equipped with a slot on the back to store the receiver easily when you are finished using it | Full Size with Multimedia Keys and Number Pad -- Full size layout keyboard with numeric pad and isolated keys make sure that your work will be done quickly and efficiently. While the multimedia keys allow you to adjust the volume, start a search or open emails with just one click of a button | 2.4G Wireless Stable Connection without Hassle-- The keyboard and mouse connected to the same dongle. The powerful 2.4G frequency provides a stable and strong wireless connection, you will never experience "lag" problem, just enjoy enjoy wireless typing without wire chaos