Near the 8200DPI sensor lens, we also have the Connect (sync) button, along with the Power On/Off switch:

If we look more careful at the USB connector, we will spot a small hole which will work hand-in-hand with the Sensei Wireless locking mechanism:

Before removing the cable, make sure to unlock it in order not to damage the small foot:

The same way, the cable can be attached to the dock, but no locking mechanism is present this time:

After we power on the dock and place the mouse on it, the charging procedure will be indicated by the top small red LED:

After SteelSeries Engine gets installed, we will get lighting on the ring too, which is designed to show the battery charge level. When placing the mouse on it the light will pulsate to indicate the charging status. Either when the mouse is not docked, the ring will indicate connection to the mouse; when the mouse is in stand-by, the ring will turn off, but when we press a button to wake the mouse, the ring will light up again. If our computer is set with USB charging ports, we can turn off the machine and leave the mouse charge while away:

The mouse lighting can be customized independently for the scroll wheel and the back logo: