• Mouse isn't working
• Mouse frequently stops working

Mouse isn't working

If your mouse isn't working, the problem is likely a lost connection. The connection between the mouse and the USB receiver can be lost for several reasons, such as:

• Low battery levels
• Moving the receiver from one USB port to another
• Moving the receiver to another computer
• Plugging the receiver into a USB hub or other unsupported device such as a KVM switch (NOTE: Your receiver must be plugged directly into your computer.)
• Using your cordless mouse on metal surfaces
• Radio frequency (RF) interference from more powerful devices such as:
  • Wireless speakers
  • Computer power supplies
  • Monitors
  • Cell phones
  • Garage door openers

Before reconnecting your mouse

Before you reconnect your mouse to a Windows computer:

1. Fix or rule out the potential problem sources listed above.

2. Turn your computer on.

3. Insert fresh batteries in your mouse (see answer 360023245174 for instructions)

4. Plug the receiver directly and securely into a working USB port on your computer.

5. Turn on your mouse. The power indicator on top should be green.

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6. If the power indicator is not lit, slide the power switch on the bottom of the mouse to the "ON" position. The power indicator should now turn green.

   .

Reconnecting your mouse

To reconnect your mouse to a Windows computer:

NOTE: These instructions use Windows screenshots. Macintosh will look slightly different, but the instructions are the same.

1. Download and install the latest software from the M345 Downloads Page.

2. Launch the Logitech Unifying Software.

   • Windows: Start > Programs > Logitech > Unifying > Logitech Unifying Software
   • Macintosh: Applications / Utilities / Logitech Unifying Software

3. When the Logitech Unifying Software Welcome screen displays, click Next to continue.

   

4. Follow the on-screen instructions to turn your mouse off and then back on.

   

5. When your mouse is detected, you'll see the confirmation message below. Click Yes and then Next.

   

6. Click Finish to exit the Logitech Unifying Software. Your mouse should now be connected.

If this solution doesn't work after a couple of attempts, restart your computer and try the reconnection process again.

Mouse frequently stops working

If your mouse frequently stops working and you keep having to reconnect it with the USB receiver, try these suggestions:

• Keep other electrical devices at least 8 inches (20 cm) away from the USB receiver

• Move the mouse closer to the USB receiver

• Move the receiver to a different USB port on your computer