ehempele9 years ago011Why is the 'old' mouse not compatible with the new Solar Keyboard, because I only had to replace the keyboard and therefore need 2 USB plugs?Show in original language (German)Anonymous9 years ago+330 Helpful answerThis should work fine with a dongle, just needs to be reconnected (paired) with the Logitech Unify.Show in original language (German)Comment1 comment