Turn on your MK540 keyboard and mouse. To connect the MK540 mouse and keyboard, plug the provided Unifying receiver into a USB
Turn on your MK540 keyboard and mouse. To connect the MK540 mouse and keyboard, plug the provided Unifying receiver into a USB
![Amazon.com: Logitech MK540 Advanced Wireless Keyboard and Wireless M310 Mouse Combo — Full Size Keyboard and Mouse, Secure 2.4GHz Connectivity ( MK540) (Renewed) : Electronics Amazon.com: Logitech MK540 Advanced Wireless Keyboard and Wireless M310 Mouse Combo — Full Size Keyboard and Mouse, Secure 2.4GHz Connectivity ( MK540) (Renewed) : Electronics](https://m.media-amazon.com/images/I/614HGGoXzFL._UC256,256_CACC,256,256_.jpg)