Logitechs klargörande angående Unifying receiver:
Thanks for your interest about the Wireless Mouse M185 and I'd be glad to help with your inquiry.
This mouse model is ready that's why it has the Unifying logo underneath. Please check your receiver, does it shows "Nano Receiver"? If yes, you need to use the Logitech Connection Utility Software instead of the Unifying Software. This software lets you restore the connection between Logitech devices and non-Unifying wireless receivers.