Overall my experience with Logitech is a company which claims to be a reputed company but on the name of support its horrible - my unified connector for MX 3 mouse stopped working and when I wanted to buy it I did not get it also the service center refused to giving me support as I bought it from Amazon - this is bad and I am too much frustrated with you guys after buying expensive products this is what I get. Logitech = a money making and horrible company.