A:AnswerI believe it comes with a 1 year manufacturer warranty but I have always found Best Buy customer service to be excellent. I suggest going to the store and talking to them and seeing if something can be worked out.
A:AnswerHello John, Yes, you can use the Bluetooth in your laptop to use with the M650 L. Here's a link to the Getting Started PDF that will walk you through the setup: https://support.logi.com/hc/en-us/articles/4414458320663-Getting-Started-Signature-650L. - Richard from Logitech
A:AnswerNO, it only works with the Bolt receiver which is newer and different signaling than the Unifying receiver. Two different technologies and they will not "cross" connect with each other. If you look at the back of this mouse it has a little Lightening Bolt insignia on it.