Follow the steps in the mouse settings page

• Mouse arrow/cursor speed can be adjusted by clicking the DPI switch on the topside of the mouse.
• Alternatively, follow the steps in the mouse settings page

If your keyboard isn't typing the correct characters, you may have the incorrect input language selected.
Please check the language preference settings of your system. If the correct language is not present, add this language to the system.
If you use more than one language on your system, make sure to select the correct one.

Set the correct language as explained in the keyboard settings page

• Clean your keyboard from dust and crumbles. 

• For best compatibility, use Windows Mediaplayer and Internet Explorer.
• Ensure that the Multimedia program you wish to control is selected as Default in the system properties.
• If still not working, uninstall any other programs/drivers related to keyboards.

• 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.

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