Use the Logitech Unifying software to pair the Unifying USB receiver with up to six devices at a time. You can determine if your Logitech devices are Unifying by this logo:

NOTE: If you don't already have it installed, you can download Unifying software from the M380 Downloads page.

To connect your M380 to the Unifying receiver:

1. Launch the Logitech Unifying software:
   • Windows: Start > Programs > Logitech > Unifying > Logitech Unifying Software
   • Macintosh: Application / Utilities / Logitech Unifying Software
   NOTE: These instructions use Windows screenshots. Macintosh will look slightly different, but the instructions are the same.
2. At the bottom of the Welcome screen, click Next.
   
3. When you see the "Restart the device…" screen, follow the on-screen instructions to turn your device off and then back on.
   
4. When your device is detected, you'll see a confirmation screen. Move your mouse to see if the cursor moves with it.
5. If your device connected successfully, click Yes and then Next.
   If your device doesn't work right away, wait a minute to see if it connects. If it doesn't, select No and then click Next to restart the pairing process from Step 2.
6. Click Finish to exit the Logitech Unifying Software (or click Pair Another Device to pair additional devices). Your device should now be connected.