Here is the set up procedure:

Please download the correct software of Logi Unifying

1. After the download is complete, click on the software. At this time, Please must turn off the Keyboard switch

2. Click Advance, the page appears "No wireless receiver is detected on your computer" and then insert the receiver (please note that the power of the Keyboard is turned off)

3. After clicking "pair new device", then find the OFF-ON button, turn on the power (restart the Keyboard), wait for the connection, and the connection is successful.