I have a logitech k400r wireless keyboard with unified wireless USB plug. I lost the USB plug, but I have a new unified wireless plug from a logitech 400+ keyboard, however, the keyboard is not responding. I was under the impression that a unified plug should work with any keyboard that support unified receiver. How do i make it work with the new receiver? (I am using Ubuntu 17.04)

enter image description hereenter image description here (Notice the unified support on both reciever and keyboard...)

It seams Logitech does have some software for this purpose for Windows, Mac Os and Chrome OS, but not Linux: http://support.logitech.com/en_us/software/unifying


You need to either:

  • Using Windows and the Logitech Keyboard/Mouse, and Unifying Software, you need to pair the USB dongle and the K400r keyboard. Once paired, it'll then work in Ubuntu.

  • In Ubuntu, install solaar and it'll do the pairing, and some limited configuration. More information about solaar, and software downloads, can be seen at their GitHub repo page.

To install solaar from the Ubuntu repos, in a terminal:

sudo apt-get update
sudo apt-get install solaar

Then follow the Solaar usage guide.

You should also make sure that the firmware in the USB dongle is current. See this link for instructions and the firmware.


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