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• Place the batteries in the mouse
• Switch the mouse on with the button on the bottom
• Connect the USB-receiver to the computer without using a hub or extension cable.
• The computer will recognize the mouse and install the built-in driver. This might take a few moments.
• The mouse is ready to use.

You can switch the mouse off / on with the button on the bottom.

However, this mouse uses standby (sleep) mode to save battery power.
There is no need to switch it off.
When the mouse is not moving or there is no signal from the USB receiver, it will turn sleep-mode on, to save battery power.
When you use the mouse again, e.g. (depending on the type of mouse) by pressing a button, or by moving the mouse, it will switch on again.

For storage or travelling we would suggest to switch the mouse off.

By pressing the DPI-button you will change the DPI.

There is no visual indication for the DPI selection, other than that the pointer speed on the screen will be faster or slower, depending on the DPI that is selected.

The receiver is stored either inside the product, or inside the battery compartment of the mouse.

It's not possible to provide a replacement receiver for this product.
This is due to the fact that during production the product and receiver receive a unique code, so the product can only communicate with the bundled original receiver.

We advise to first double-check the batteries, then disconnect the receiver, restart the computer and reconnect the receiver.

If the issue persists, test the mouse by connecting the receiver to another USB-port and another computer. 

Can you check the following items:

1. The headset is connected to the correct audio connection(s) on your computer? Consult the manual for more information.
2. There is no error message (visible by the yellow exclamation mark) reported in the Device Manager?
3. The device is the default device for recording and playbacking / input and output?
   Windows 7/8:
   • Right click on the speaker icon in the taskbar and select Playback devices > Select the correct device > Set Default > OK
   • To activate the microphone: right-click on the speaker icon in the taskbar and select Recording devices > select the correct device > Set Default > OK
   
   Windows 10:
   • Right click on the speaker icon in the taskbar and select open Sound settings > Select the correct device in the Choose your ouput device option
   • To activate the microphone: right-click on the speaker icon in the taskbar and select open Sound settings > Select the correct device in the Choose your input device option
   
   Mac:
   • Go to "System Preferences" > "Sound"
   • Click the "Input" tab to access microphone settings.
   • Click the microphone in the devices list to adjust the microphone settings.

If the above steps don't help, connect the headset to another computer, to check if the problem persists.

This mouse doesn't need a driver, it functions with the built-in Windows driver.

Please check the following:

• the batteries are full
• your computer is up-to-date via windowsupdate.com
• the USB-ports are up-to-date by downloading and installing the latest USB-drivers from the website of the computer's manufacturer.
• no errors are visible in the Device Manager. If any errors are visible, especially in the mouse and USB section, remove these before proceeding.

Now, reinstall the mouse to the computer by:

• removing the receiver
• restarting the computer
• and then (after the computer has fully restarted) reconnecting the receiver to the computer

so the computer can recognize the mouse and properly install the built-in driver.

If the error persists, test the mouse (receiver) on another USB-port and on another computer.
 

• Try using the mouse on a different surface or use a mousepad.
• Clean the sensor on the bottom of the mouse with a dry cloth.
• Improve wireless performance.

Unfortunately, we do not have service centers to repair products.
A defective product should be replaced by your point of purchase during the warranty period.

We offer a 'return to retailer' warranty on our products. In case of a defect, you can return the product to your retailer with failure description, proof of purchase and all accessories. During the warranty period you will receive a replacement product from the retailer if available. For full warranty conditions you can consult: https://www.trust.com/support/warranty