First download and install the Razer Viper driver. After installation, you can see that the software interface uses Razer’s representative green and black colors. On the main interface, you can set the button functions, light on/off, rate of return, DPI and files.

You can see that there are three types of return rates: 125, 500 and 1000Hz. The higher the rate, the more accurate the cursor positioning, but at the same time, the requirements for computer performance are also higher. In terms of DPI, there are four options: 450, 900, 1800, and 3500dpi, but it’s a pity that you can’t set the DPI at will. Different Profiles can save different settings. For example, Profile1 is set for normal use, and Profile2 is set for playing CS. Then press the Profile button at the bottom to switch between them.

Then take a look at what functions the buttons can be changed to. The five buttons above can be replaced with double-click, change DPI, cancel button, etc. The scroll wheel provides fewer options when scrolling up and down. But the most important macro function is still supported. After selecting Macro in "Advanced Functions", you can set the macro, and it also provides a delay of 50 milliseconds

If you select SingleKey (single key), you can Select functions such as copy, paste, switch windows, mute, etc. directly below.

Finally, click the green arrow on the left side of the interface to open the sensor settings, where you can adjust the sensing rate, click speed, cursor acceleration, etc. Moreover, the speed of the X-axis and Y-axis can be adjusted separately, which is very practical.