So, those of you who write of Logitech's quality simply have had bad luck or perhaps like to abuse your property a little too much. I will be upgrading these to the G19 Keyboard, the 7.1 Surround Gaming Headset and the newest gaming mouse. I also have the G15 Gaming Keyboard and 2.1 Logitech speakers. As far as the SetPoint software is concerned, XP, Vista and Windows 7 never needed it for my mouse to run perfectly. Well, I've had the cordless MX laser mouse for many years with absolutely no problem. Or Logitech resents my IBM keyboard, and fabricates bogus keystrokes.) (I have two theories: Windows resents the Logitech mouse, and attacks it. I'm running with no Setpoint, which means there is no horizontal scroll, which is why I bought the LX3. True, the pathology could be in some other software that somehow reaches into Setpoint's data. I uninstalled Setpoint V6, and the problem has not recurred in several hours of running. I unplugged the keyboard, which had no effect. One time, the repeating imaginary keystroke was keypad-rightarrow, another time there was no apparent imaginary input. Rebooting made the problem go away for a couple of hours.

Skipping details about floundering around, I alt-tabbed my way into an editor (emacs), and discovered the editor was receiving repeated keypad-leftarrow input. Rather than re-install V4 from th CD that came with the mouse, I downloaded 6.32.

To assign shortcuts for common Windows 8 functions to your keyboard’s F-keys.Setpoint Version 4.x forgot about the horizontal scroll from my LX3 mouse. If your mouse has a tilt wheel and you want to use it to scroll left and right in traditional Windows desktop applications like Microsoft Excel.

* If your mouse is a Logitech G-Series gaming mouse, you must install Logitech Gaming Software (LGS) instead of SetPoint. Windows has built-in support for five-button mice, but if your mouse has more than five buttons, then you’ll need to install SetPoint to support the extra buttons.* To assign various functions to your mouse buttons or keyboard, F-keys, and hotkeys. It can also notify you of your device's battery status and whether Caps Lock and Num Lock are on. Logitech SetPoint lets you customize your mouse buttons, keyboard F-keys, and hotkeys, control tracking speed, and configure other device-specific settings.

Download logitech setpoint