How do I use my Predator Cestus 300 Gaming mouse? Setting up your mouse Connect the Cestus 300 mouse to a USB port. Download the Predator Quartermaster application at http://go.acer.com/quartermaster. Double-click on the PredatorQuarterMaster.exe file once it has finished downloading. Follow the instructions on your screen to install the application. You will need to restart your computer to complete the installation process. Changing the language of the QuarterMaster software Type QuarterMaster in the Windows search box and select the QuarterMaster software Select the Settings icon. Choose your language from the drop down list and close the settings menu to save the change. Adjusting the mouse settings Type QuarterMaster in the Windows search box and select the QuarterMaster software Select the profile you want to change the settings for. Choose the setting you want to change from the left menu. Choose your desired options. Close the software to save your settings. Mouse Features Scroll wheel Left button Right button DPI settings Omron dual switches (50M + 20M) Optical Sensor