It was a great feature of the this mouse and Logitech removed it and kept the same model number which is extremely misleading to existing customers

It should have a different model number or at least be more up front about the missing functionality.

I don't understand how they can sell a different mouse with the same model number.

Why would you sell a product with the same model number that is different?Good grief.

They didn't even change the model number so you would think you're getting the same style as the one you already bought and loved

I had a previous version of this mouse with the same exact model number and I loved it

I have an older mouse with the same model number (but with logo above Logitech name on back of mouse) and all of the buttons work on Windows XP.

It is decieving that they are using the same model number this is NOT the same mouse.

If the model number was the

I previously purchased an M 510 from Logitech which I loved the first day, but after I realized that the mouse freezing during use (and needing to move it around frantically to get it to register on the monitor again) wasn't due to my PC performance, I pretty much stopped using it.

Lately I've been using an $8, 3M Precise Mouse Pad with Non-skid Foam Back with an M705

I previously purchased an M 510 from Logitech which I loved the first day, but after I realized that the mouse freezing during use (and needing to move it around frantically to get it to register on the monitor again) wasn't due to my PC performance, I pretty much stopped using it.

Lately I've been using an $8, 3M Precise Mouse Pad with Non-skid Foam Back with an M705