AmazonBasics HM8190US/CA Manual page 8

Pairing
1. Remove the battery cover of the mouse, and take the nano
receiver out.
2. Plug the nano receiver into a USB port of your computer.
If the connection between mouse and/or keyboard and the
receiver fails or is interrupted, proceed as follows:
1. Remove the nano receiver from the USB port and plug it back in
2. Press the ESC+Q button of the keyboard.
NOTE
6
The LED indicator on the mouse and the
keyboard blinks when it is in pairing mode and
stops blinking when it is successfully paired with
the receiver.