Hi, Just to share the info: This link for the list of Logitech Unifying keyboards: http://www.logitech.com/en-us/keyboards/keyboard-mice-combos?filters=3623,3391 Compatibility with the unifyiny mouse and k270 is not in the list. https://community.logitech.com/s/question/0D53100006V8FaICAV/wireless-keyboard-compatible-with-mouse-m705-receiver