Until I figured out using the side buttons Acquired after a very old, small cheap mouse. Against its background, the new mouse is super for me. Its pros: Comfortable in the hand, good response. I really liked the mouse. The backlighting is beautiful too. Satisfied with the purchase Cons: It is very difficult to call this a disadvantage, but in order to set the backlight mode, you need to download an additional program. I personally liked the basic version of the glow.