Quha Zono Gebrauchsanweisung Seite 6

USB connector
Installing the USB receiver
The product comes with a receiver which is connected to the computer's
USB port. The receiver is operational when connected to the USB port.
Additional mouse buttons can be connected to the USB receiver. One mouse
button is connected directly to the USB receiver and will work as the left
button of the mouse. You can add two buttons by connecting the included
adapter to the USB receiver. The left mouse button is connected to the silver
and the right button to the gold port .
6
Connector for addi-
tional buttons