This product doesn't need any drivers to function.
Just connect and the product should work.

This product uses standby (sleep) mode to save battery power.

There is no need to switch it off. 

When the product is not used or there is no signal from the USB receiver, it will turn sleep-mode on, to save battery power.

For storage or travelling we would suggest to remove the batteries to avoid leaking. 

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.

К сожалению задать кнопкам другую функцию не представляется возможным, так как мышь работает со стандартным драйвером системы. Специальной программки, которая позволила бы изменения функций кнопок, в комплекте не прилагается.  

Можно посмотреть в интернете, может быть можно скачать программку для программирования кнопок

Вот например с этого сайта http://www.highrez.co.uk/downloads/XMouseButtonControl.htm

Но заметьте, что это неофициальное решение и мы не можем дать гарантии, что данное ПО вообще будет работать с данной мышью.

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 recommend fully reinstalling the product, including with new batteries.

Make sure that all errors have been removed from Device Manager, remove the receiver, and then restart the computer.
When the computer has completely restarted, connect the receiver to the computer without using a hub or extension cable.
The computer detects the product and installs the integrated driver. This can take a moment.
The product can now be used.

If the problem persists, test the product on another USB port and another computer to rule out a problem with the computer.

Download the ‘mouse fix software’ in the Downloads-section and follow the instructions in the addendum (available for download in the Downloads section) to solve the issue

To install the mousefix:

1) Connect your mouse to the computer

2) If you have downloaded the zip or rar file, extract the software

3) Open the folder “mouse fix software”

4) Open “MS_Fix2 software”

5) Go with mouse pointer to the "Click to set" window and click on it

6) If you see the "Set OK" window after you've done your mouse is re-connected and should work as normal

7) Close the software  

Note for Mac-users: The mousefix is not available in a Mac version. However, when you use the mousefix on a Windows PC for your mouse, your mouse will work fine again on a Mac computer.

When you receive the 'wait mouse' message, we advise you to update the computer via Windows Update. Then reinstall the software.

If running Windows update doesn't solve the issue, we ask that you to run the Mousefix software on another computer, preferably with a different operating system.
When you run the Mousefix on the other computer, the mouse will work normally on your computer as well.

• 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.

Battery life depends on many variables including usage, quality of batteries and environmental factors (such as distance to receiver, nearby metallic objects, surface on which the product is used, etc. etc.).

This product uses standby (sleep) mode to save battery power. When the product is not moving or there is no signal from the USB receiver, it will turn sleep-mode on, to save battery power.

Make sure that when the battery is draining very fast, that there is no signal still going from the computer to the product, when the product is not used.  Some computers continuously power their USB-ports, even when the computer itself is switched off. You can check this in the Power Management settings of the USB-port.

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