[. . . ] Install Logitech SetPoint for Windows or Logitech Control Center for Macintosh® to enjoy the Side-to-Side Scrolling and Application Switch features or to personalize your mouse settings. [. . . ] If the Unifying receiver is plugged into a USB hub, try plugging it directly into your computer. Move the Unifying receiver to a USB port closer to the mouse, or go to www. Com/usbextender for a USB extension stand that will allow the Unifying receiver to be placed closer to the mouse. Logitech, the Logitech logo, and other Logitech marks are owned by Logitech and may be registered. Logitech assumes no responsibility for any errors that may appear in this manual. Battery Indicator Light ­ Turns red when a couple weeks of battery life remain. [. . . ] Now add a compatible wireless keyboard that uses the same receiver as your mouse. [. . . ]