Maurococo3 years ago000I lost the dongle from my Logitech K400+, can I buy this dongle again? Will it work then?Show in original language (German)Gordholm3 years ago • purchased this product000purchased this productjust tried it and it doesn't work, according to the data sheet, the k400+ also needs the Logitech Unifying protocol (2.4 GHz).Show in original language (German)Comment2 comments