[Comfortable Wireless Keyboard Mouse Combo]: This wireless keyboard mouse combo has a comfortable touch and typing feel, this wireless keyboard design with palm rest and folding holder that can protect your wrists from injury even when typing for a long time. Note: The USB receiver is in the battery compartment of the keyboard, you can find it when open the keyboard battery cover. [2. 4G Stable Wireless Connection]: This wireless keyboard and mouse combo share the same USB receiver, no need to take upadditional USB ports (Also the wireless keyboard and mouse can also be used separately). Plug & 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.