Your mouse has two Bluetooth channel selections on the bottom that enable it to be paired with two Bluetooth hosts (ex. Bluetooth channel 1 for PC, and Bluetooth channel 2 for Mac).

Once you've paired the mouse with two Bluetooth hosts, you can switch to a different host when needed. The LED on top will blink while the mouse tries to re-connect to a Bluetooth host. After it connects, the LED will glow blue steadily. You can then use the mouse with that device.

NOTE: The LED will turn off a few seconds after the connection is secured. This is normal and saves battery power.