2-IN-1 USB-A/C Receiver:This gold ergonomic wireless keyboard comes with an extra USB-C adapter for plug-and-play convenience, ensuring no connection or latency issues. Equipped with advanced 2.4GHz wireless technology, it offers a powerful and reliable connection range of up to 10 meters (33 feet). Please note that the USB-C adapter is not a standalone receiver and must be used with the USB-A receiverboth receivers are individually packaged in the box for easy access Long Battery Life:This gold wireless keyboard is equipped with an intelligent automatic sleep mode to effectively save power. When it remains unused for a period, the keyboard will automatically enter a low-power sleep state, greatly extending battery life. To wake it up, simply tap any key to quickly resume operation. Battery information: This black-gold keyboard requires 2 AA batteries (Batteries not included) Windows/Mac OS Dual System:This wireless office keyboard supports seamless compatibility with both W