GXT 101D Gav

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

Yes, it is possible to press multiple buttons simultaneously. 

Please note that this doesn't mean that all buttons can be pressed simultaneously, since this depends on the specific hardware of a mouse. Mice may have the hardware limitation that the thumb buttons can't be used together with left/right/mid click.

Follow the steps in the mouse settings page

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.

• 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

Although our keyboards and mice are designed for use with computers, they can be used on PS4. However please note, most PS4 games do not support a keyboard and mouse.

When using a (wired) keyboard or mouse with a PS4, make sure it connects well with the PS4. If the PS4 has a connection on the back, connect the keyboard/mouse to the USB-connection on the back of the PS4. Or alternatively use an extension cable or USB hub.

You can use our mice and keyboards on the Xbox One.

Please note that Xbox One supports the use of mouse and keyboard in some games and apps, but it doesn’t work for every game or app. The game or app publisher must enable this feature for their content.

For more information, consult the Xbox support website via https://support.xbox.com/help/Hardware-Network/accessories/mouse-keyboard