On-board memory functions let you store some settings to the device itself with the help of G HUB. You can then carry the settings (for example, the mouse DPI) to another computer without needing to install G HUB.
To enable On-board memory mode, select the device in G HUB and click on the settings icon in the top right corner. Toggle the button to ON and choose the profile you would like to save to the On-board memory of your mouse.